Joshua 24:25

So Joshua made a covenant with the people that day, in exacting this promise from them, and set them a statute and an ordinance in Shechem. It was a second renewal of the covenant made with Israel on Mount Sinai, Exodus 19:20. It is a great and serious thing to serve the Lord, a matter which no man can perform in his own reason and strength, but only in the strength of the grace of God.