What does Joshua 24:15 mean?

But if you don't want to serve the Lord, then decide right now who you will serve—whether it's the gods your ancestors worshiped back in Mesopotamia, or the gods of the Amorites here in this land. As for me and my family, we're sticking with the Lord. Joshua 24:15 - Modern Text Bible

(Joshua is challenging the people to make a clear choice about their loyalty. He makes it personal, saying his own household will stay faithful to God, no matter what others do.)