16 …God is powerful to the fulfilling of all his words.
17 For he will fulfil all his promises which he shall make unto you, for he has fulfilled his promises which he has made unto our fathers.
How can we know we can trust God to fulfill His promises? Because it’s His pattern. That’s why we have the scriptures. They continually remind us of His pattern.
So look for His promises. Seek them. Live to be worthy of them. And then expect that He is bound when we keep His commandments and choose Him. It’s an anchor we can believe in.