Joshua 24:14-15, “Now therefore fear the LORD, and serve him in sincerity and in faithfulness; put away the gods which your fathers served beyond the River, and in Egypt, and serve the LORD. And if you be unwilling to serve the LORD, choose this day whom you will serve, whether the gods your fathers served in the region beyond the River, or the gods of the Amorites in whose land you dwell; but as for me and my house, we will serve the LORD.”
1 Kings 18:21, “And Elijah came near to all the people, and said, ‘How long will you go limping with two different opinions? If the LORD is God, follow him; but if Baal, then follow him.’ And the people did not answer him a word.”
Matt. 6:24, “No one can serve two masters; for either he will hate the one and love the other, or he will be devoted to the one and despise the other. You cannot serve God and mammon.”