(Devarim, Ibid.) "and you go astray": from the way of life to the way of death
"and you serve other gods": Now are they gods? Is it not written (Isaiah 37:19) "And they have cast their gods into the fire. For they are not gods, but the work of men's hands." Why, then, "other gods"? For others make them gods.
Variantly: Why are they called "other gods"? For they are "others" (i.e., "strangers") to their worshippers. And thus is it written (Ibid. 46:7) "He will also cry out to him (his god) and he will not answer. From his trouble he shall not save him."