'Unfaithful' in the Bible

“Speak to the Israelites and tell them: If any man’s wife goes astray, is unfaithful to him,

"The priest is to administer this oath to the woman: "If indeed another man didn't have sexual relations with you and you didn't become unfaithful to your husband, then may you be free from these waters that bring a curse.

But if you have become unfaithful to your husband and have become defiled because a man who isn't your husband has had sexual relations with you"'

“When he makes her drink the water, if she has defiled herself and been unfaithful to her husband, the water that brings a curse will enter her and cause bitter suffering; her belly will swell, and her thigh will shrivel. She will become a curse among her people.

These will serve as tassels for you to look at, so that you may remember all the Lord’s commands and obey them and not become unfaithful by following your own heart and your own eyes.