Joshua 24:18-24

The LORD drove all the peoples out from before us, even the Amorites who lived in the land. We also will serve the LORD, for He is our God.” Then Joshua said to the people, “You will not be able to serve the LORD [if you serve any other gods], for He is a holy God; He is a jealous God [demanding what is rightfully and uniquely His]. He will not forgive your transgression [of His law] or your sins. If you do abandon (reject) the LORD and serve foreign gods, then He will turn and do you harm and consume and destroy you after He has done you good.” The people said to Joshua, “No, but we will serve [only] the LORD.” Joshua then said to the people, “You are witnesses against yourselves that you have chosen for yourselves the LORD, to serve Him.” And they said, “We are witnesses.” “Now then, remove the foreign gods which are among you, and incline your hearts toward the LORD, the God of Israel.” The people said to Joshua, “We will serve the LORD our God and we will listen to and obey His voice.”