"Though all the peoples walk each in the name of his god, as for us, we will walk in the name of the LORD our God forever and ever."
Everyone, without exception, serves a god. Technically there are no atheists, for even the one who says he/she does not believe there is a god worships (attributes ultimate worth to) someone or something, even if it's him- or herself. Consequently, everyone daily decides, not whether to worship a god or not, but which being will receive his/her worship: the living God of all that is, or a substitute.
We as believers must constantly be on guard lest even one of the multitudes of worldly substitute deities subtly slips onto the throne of our hearts, displacing the name of the LORD our God. The enemy of our soul would have us assume it cannot happen. Yet the One who knows the true depths of our deceitful heart warns, "Therefore, let him who thinks he stands, take heed lest he fall."