I have always liked this sentence from the Bible actually, and still do.

I interpret it in a loose way - if God stands for, let´s say, believing in the right things, having good values, being a decent person, and also for self-discovery, "know thyself", a deep, meaningful life, then the "other gods" would be all the wrong goals one can have, to have money and power and beauty and an easy, shallow life full of luxury and fun and toys ... all the surface allures of this world.