'Guaranteed' in the Bible

this is the one who will live on the heights; his refuge will be a mountain fortress. His food will be supplied, and his water will be guaranteed.

Therefore, the promise is based on faith, so that it may be a matter of grace and may be guaranteed for all of Abraham's descendants not only for those who were given the Law, but also for those who share the faith of Abraham, who is the father of us all.

In the same way, when God wanted to make the unchangeable character of his purpose perfectly clear to the heirs of his promise, he guaranteed it with an oath,