Deuteronomy 6:10-15

“Then it shall come about when the LORD your God brings you into the land which He swore (solemnly promised) to [give] your fathers—to Abraham, Isaac, and Jacob—to give you, [a land with] great and splendid cities which you did not build, and houses full of all good things which you did not fill, and hewn (excavated) cisterns (wells) which you did not dig out, and vineyards and olive trees which you did not plant, and you eat and are full and satisfied, then beware that you do not forget the LORD who brought you out of the land of Egypt, out of the house of slavery. You shall fear [only] the LORD your God; and you shall serve Him [with awe-filled reverence and profound respect] and swear [oaths] by His name [alone]. You shall not follow other gods, any of the gods of the peoples who surround you, for the LORD your God who is among you is a jealous (impassioned) God [demanding what is rightfully and uniquely His]—otherwise the anger of the LORD your God will be kindled and burn against you, and He will destroy you from the face of the earth.