He will not fail you or forsake you.

God made two promises to Israel in Deuteronomy 31:6. First, that He would not fail them. Only God can promise this, and we should praise him for that. No man can promise to not fail. Second, he promised to not forsake them. This is amazing, considering how often Israel forsake Him. A perfect God has every right to forsake such wretched creatures as us, but he doesn't. Praise God for his mercy to us!