5 Bible Verses about Swearing Oaths

Above all things, my brethren, don't swear, neither by the heaven, nor by the earth, nor use any other oath; but let your affirmation, or negation, be sincere, lest you fall under condemnation.

for when men swear by a superior, the ratifying what they say with an oath, puts an end to all further debate.

and the king relented: nevertheless out of regard to the oath, and to those who sat with him at table, he commanded it to be brought to her.