'Promise' in the Bible

God is not a human male he doesn't lie, nor is he a human being he never vacillates. Once he speaks up, he's going to act, isn't he? Once he makes a promise, he'll fulfill it, won't he?

"When a man makes a vow to the LORD, or swears an oath an obligation that is binding to himself he is not to break his word. Instead, he is to fulfill whatever promise came out of his mouth.'"

If, while she had been living in her late or former husband's house, she makes a vow or a promise that binds her with an oath,