Matthew 5:33-37 New American Bible (Revised Edition) (NABRE)
Teaching About Oaths. 33 [a]“Again you have heard that it was said to your ancestors, ‘Do not take a false oath, but make good to the Lord all that you vow.’ 34 But I say to you, do not swear at all;[b] not by heaven, for it is God’s throne; 35 nor by the earth, for it is his footstool; nor by Jerusalem, for it is the city of the great King. 36 Do not swear by your head, for you cannot make a single hair white or black. 37 [c]Let your ‘Yes’ mean ‘Yes,’ and your ‘No’ mean ‘No.’ Anything more is from the evil one.