Matthew 5:33-37 - The Sermon On The Mount: Taking Oaths
33 Again, you have heard that it was said to the ancients: You shall not swear falsely, but shall pay to the Lord your vows. 34 But I say to you, Swear not at all: neither by heaven, for it is the throne of God; 35 nor by the earth, for it is his footstool; nor by Jerusalem, for it is the city of the great King: 36 neither shall you swear by your head, for you can not make one hair white or black. 37 But let your word be, Yes, yes; No, no; for whatever is more than these is of the Evil One.