Deuteronomy 6:13
Fear the LORD your God, serve Him, and take your oaths using only His name.

Exodus 20:7
You shall not take the name of the LORD your God in vain, for the LORD will not leave anyone unpunished who takes His name in vain.

Leviticus 19:12
You must not swear falsely by My name and so profane the name of your God. I am the LORD.

Psalm 139:20
who invoke You with deceit; Your enemies take Your name in vain.

Jeremiah 4:2
and if you can swear, 'As surely as the LORD lives, ' in truth, in justice, and in righteousness, then the nations will be blessed by Him, and in Him they will glory."

Matthew 5:33, 34
Again, you have heard that it was said to the ancients, 'Do not break your oath, but fulfill your vows to the Lord.' . . .

James 5:12
Above all, my brothers, do not swear, not by heaven or earth or by any other oath. Simply let your "Yes" be yes, and your "No, " no, so that you will not fall under judgment.