Sh'mu'el Alef (1 Sa) 7:3

Sh’mu’el addressed all the people of Isra’el; he said: “If you are returning to ADONAI with all your heart, then be done with the foreign gods and ‘ashtarot that you have with you, and direct your hearts to ADONAI. If you will serve only him, he will rescue you from the power of the P’lishtim.”