Have you ever swore “on a stack of Bibles” or “on my mother’s grave” (or similar)? If we all were truthful all the time, we would have no need to swear such oaths. Jesus shared that our unrighteousness is revealed in our anger, our adultery, and our lack of authenticity; Bro. Jeff explains here.
Matthew 5:20-37 (KJV)
20 For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven.
21 Ye have heard that it was said of them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment:
22 But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire.
23 Therefore if thou bring thy gift to the altar, and there rememberest that thy brother hath ought against thee;
24 Leave there thy gift before the altar, and go thy way; first be reconciled to thy brother, and then come and offer thy gift.
25 Agree with thine adversary quickly, whiles thou art in the way with him; lest at any time the adversary deliver thee to the judge, and the judge deliver thee to the officer, and thou be cast into prison.
26 Verily I say unto thee, Thou shalt by no means come out thence, till thou hast paid the uttermost farthing.
27 Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
28 But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
29 And if thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.
30 And if thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.
31 It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement:
32 But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery.
33 Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths:
34 But I say unto you, Swear not at all; neither by heaven; for it is God’s throne:
35 Nor by the earth; for it is his footstool: neither by Jerusalem; for it is the city of the great King.
36 Neither shalt thou swear by thy head, because thou canst not make one hair white or black.
37 But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil.
Leviticus 19:12
12 And ye shall not swear by my name falsely, neither shalt thou profane the name of thy God: I am the Lord.
Genesis 14:22-24
22 And Abram said to the king of Sodom, I have lift up mine hand unto the Lord, the most high God, the possessor of heaven and earth,
23 That I will not take from a thread even to a shoelatchet, and that I will not take any thing that is thine, lest thou shouldest say, I have made Abram rich:
24 Save only that which the young men have eaten, and the portion of the men which went with me, Aner, Eshcol, and Mamre; let them take their portion.
Genesis 21:22-24
22 And it came to pass at that time, that Abimelech and Phichol the chief captain of his host spake unto Abraham, saying, God is with thee in all that thou doest:
23 Now therefore swear unto me here by God that thou wilt not deal falsely with me, nor with my son, nor with my son’s son: but according to the kindness that I have done unto thee, thou shalt do unto me, and to the land wherein thou hast sojourned.
24 And Abraham said, I will swear.
Genesis 24:1-4
1 And Abraham was old, and well stricken in age: and the Lord had blessed Abraham in all things.
2 And Abraham said unto his eldest servant of his house, that ruled over all that he had, Put, I pray thee, thy hand under my thigh:
3 And I will make thee swear by the Lord, the God of heaven, and the God of the earth, that thou shalt not take a wife unto my son of the daughters of the Canaanites, among whom I dwell:
4 But thou shalt go unto my country, and to my kindred, and take a wife unto my son Isaac.
Genesis 26:31
31 And they rose up betimes in the morning, and sware one to another: and Isaac sent them away, and they departed from him in peace.
Genesis 31:44-53
44 Now therefore come thou, let us make a covenant, I and thou; and let it be for a witness between me and thee.
45 And Jacob took a stone, and set it up for a pillar.
46 And Jacob said unto his brethren, Gather stones; and they took stones, and made an heap: and they did eat there upon the heap.
47 And Laban called it Jegarsahadutha: but Jacob called it Galeed.
48 And Laban said, This heap is a witness between me and thee this day. Therefore was the name of it called Galeed;
49 And Mizpah; for he said, The Lord watch between me and thee, when we are absent one from another.
50 If thou shalt afflict my daughters, or if thou shalt take other wives beside my daughters, no man is with us; see, God is witness betwixt me and thee.
51 And Laban said to Jacob, Behold this heap, and behold this pillar, which I have cast betwixt me and thee:
52 This heap be witness, and this pillar be witness, that I will not pass over this heap to thee, and that thou shalt not pass over this heap and this pillar unto me, for harm.
53 The God of Abraham, and the God of Nahor, the God of their father, judge betwixt us. And Jacob sware by the fear of his father Isaac.
Genesis 47:29-31
29 And the time drew nigh that Israel must die: and he called his son Joseph, and said unto him, If now I have found grace in thy sight, put, I pray thee, thy hand under my thigh, and deal kindly and truly with me; bury me not, I pray thee, in Egypt:
30 But I will lie with my fathers, and thou shalt carry me out of Egypt, and bury me in their buryingplace. And he said, I will do as thou hast said.
31 And he said, Swear unto me. And he sware unto him. And Israel bowed himself upon the bed’s head.
1 Samuel 20:16-17
16 So Jonathan made a covenant with the house of David, saying, Let the Lord even require it at the hand of David’s enemies.
17 And Jonathan caused David to swear again, because he loved him: for he loved him as he loved his own soul.
Psalm 132:2
2 How he sware unto the Lord, and vowed unto the mighty God of Jacob;
Genesis 22:15-17
15 And the angel of the Lord called unto Abraham out of heaven the second time,
16 And said, By myself have I sworn, saith the Lord, for because thou hast done this thing, and hast not withheld thy son, thine only son:
17 That in blessing I will bless thee, and in multiplying I will multiply thy seed as the stars of the heaven, and as the sand which is upon the sea shore; and thy seed shall possess the gate of his enemies;
Hebrews 6:13-17
13 For when God made promise to Abraham, because he could swear by no greater, he sware by himself,
14 Saying, Surely blessing I will bless thee, and multiplying I will multiply thee.
15 And so, after he had patiently endured, he obtained the promise.
16 For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.
17 Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed it by an oath:
Matthew 14:6-10
6 But when Herod’s birthday was kept, the daughter of Herodias danced before them, and pleased Herod.
7 Whereupon he promised with an oath to give her whatsoever she would ask.
8 And she, being before instructed of her mother, said, Give me here John Baptist’s head in a charger.
9 And the king was sorry: nevertheless for the oath’s sake, and them which sat with him at meat, he commanded it to be given her.
10 And he sent, and beheaded John in the prison.
Matthew 26:69-74
69 Now Peter sat without in the palace: and a damsel came unto him, saying, Thou also wast with Jesus of Galilee.
70 But he denied before them all, saying, I know not what thou sayest.
71 And when he was gone out into the porch, another maid saw him, and said unto them that were there, This fellow was also with Jesus of Nazareth.
72 And again he denied with an oath, I do not know the man.
73 And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee.
74 Then began he to curse and to swear, saying, I know not the man. And immediately the cock crew.
Matthew 23:16-22
16 Woe unto you, ye blind guides, which say, Whosoever shall swear by the temple, it is nothing; but whosoever shall swear by the gold of the temple, he is a debtor!
17 Ye fools and blind: for whether is greater, the gold, or the temple that sanctifieth the gold?
18 And, Whosoever shall swear by the altar, it is nothing; but whosoever sweareth by the gift that is upon it, he is guilty.
19 Ye fools and blind: for whether is greater, the gift, or the altar that sanctifieth the gift?
20 Whoso therefore shall swear by the altar, sweareth by it, and by all things thereon.
21 And whoso shall swear by the temple, sweareth by it, and by him that dwelleth therein.
22 And he that shall swear by heaven, sweareth by the throne of God, and by him that sitteth thereon.
Psalm 58:3
3 The wicked are estranged from the womb: they go astray as soon as they be born, speaking lies.
Psalm 62:4
4 They only consult to cast him down from his excellency: they delight in lies: they bless with their mouth, but they curse inwardly. Selah.
Psalm 101:7
7 He that worketh deceit shall not dwell within my house: he that telleth lies shall not tarry in my sight.
Jeremiah 17:9
9 The heart is deceitful above all things, and desperately wicked: who can know it?
Proverbs 12:12
12 The wicked desireth the net of evil men: but the root of the righteous yieldeth fruit.
Proverbs 19:5
5 A false witness shall not be unpunished, and he that speaketh lies shall not escape.
Acts 5:1-11
5 But a certain man named Ananias, with Sapphira his wife, sold a possession,
2 And kept back part of the price, his wife also being privy to it, and brought a certain part, and laid it at the apostles’ feet.
3 But Peter said, Ananias, why hath Satan filled thine heart to lie to the Holy Ghost, and to keep back part of the price of the land?
4 Whiles it remained, was it not thine own? and after it was sold, was it not in thine own power? why hast thou conceived this thing in thine heart? thou hast not lied unto men, but unto God.
5 And Ananias hearing these words fell down, and gave up the ghost: and great fear came on all them that heard these things.
6 And the young men arose, wound him up, and carried him out, and buried him.
7 And it was about the space of three hours after, when his wife, not knowing what was done, came in.
8 And Peter answered unto her, Tell me whether ye sold the land for so much? And she said, Yea, for so much.
9 Then Peter said unto her, How is it that ye have agreed together to tempt the Spirit of the Lord? behold, the feet of them which have buried thy husband are at the door, and shall carry thee out.
10 Then fell she down straightway at his feet, and yielded up the ghost: and the young men came in, and found her dead, and, carrying her forth, buried her by her husband.
11 And great fear came upon all the church, and upon as many as heard these things.
Revelation 21:8
8 But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.
Revelation 22:14-15
14 Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.
15 For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie.