Bible: Swear Oath If To

Repeated words found across different books in the Bible (KJV):
Lev 5:4
Or if a soul swear, pronouncing with his lips to do evil, or to do good, whatsoever it be that a man shall pronounce with an oath, and it be hid from him; when he knoweth of it, then he shall be guilty in one of these.

Num 30:2
If a man vow a vow unto the LORD, or swear an oath to bind his soul with a bond; he shall not break his word, he shall do according to all that proceedeth out of his mouth.

Josh 2:20
And if thou utter this our business, then we will be quit of thine oath which thou hast made us to swear.

1Ki 8:31
If any man trespass against his neighbour, and an oath be laid upon him to cause him to swear, and the oath come before thine altar in this house:

2Chr 6:22
If a man sin against his neighbour, and an oath be laid upon him to make him swear, and the oath come before thine altar in this house;