OT-LAW.filter - nkjv swears:

nkjv@Leviticus:5:4 @ "Or if a person swears, speaking thoughtlessly with his lips to do evil or to do good, whatever it is that a man may pronounce by an oath, and he is unaware of it--when he realizes it, then he shall be guilty in any of these matters.

nkjv@Leviticus:6:3 @ or if he has found what was lost and lies concerning it, and swears falsely--in any one of these things that a man may do in which he sins:

nkjv@Numbers:30:2 @ If a man makes a vow to the LORD, or swears an oath to bind himself by some agreement, he shall not break his word; he shall do according to all that proceeds out of his mouth.