Matthew 5:33–37
33 “Again, you have heard that it was said to our ancestors, You must not break your oath, but you must keep your oaths to the Lord.C,h 34 But I tell you, don’t take an oath at all: either by heaven, because it is God’s throne; 35 or by the earth, because it is his footstool; or by Jerusalem, because it is the city of the great King.i 36 Do not swear by your head, because you cannot make a single hair white or black. 37 But let your ‘yes’ mean ‘yes,’ and your ‘no’ mean ‘no.’ Anything more than this is from the evil one.j