God works in us through covenant. What He says, God will do. A covenant is a binding contract. What God promises, He will fulfill. Faith stands upon the covenant promises of God through Jesus Christ. It is based upon God's covenant word.
So then faith comes by hearing, and hearing by the word of God (Romans 10:17). Faith stands upon the word of God's sure promises. We are standing on the promises that cannot fail, because they are God's covenant promises for all who believe.
Now may the God of peace who brought up our Lord Jesus from the dead, that great Shepherd of the sheep, through the blood of the everlasting covenant make you complete in every good work to do His will, working in you, what is well pleasing in His sight, through Jesus Christ, to whom be glory, forever and ever. Amen (Hebrews 13:20-21).
God's covenant with us is absolutely sure through the blood of Jesus Christ and His glorious resurrection. It is an everlasting covenant that cannot be changed, because God changes not.
God's covenant promises work in us to please Himself. Our lives please God not because we are trying real hard. To the contrary, God works in us what pleases Him. That's God's everlasting covenant with us.
