If man does not give his highest respect to the God that made him, there will be something else that has the possession of it. Men will either worship the true God, or some idol. It is impossible it should be otherwise; something will have the heart of man. And that which a man gives his heart to, may be called his god.
It may not satisfy the temporary needs at the time, but it will satisfy something bigger, grander and more eternal. That biblically defined purpose is that we might worship God and enjoy Him forever. Apart from that, man has no other purpose; and short of that, man wanders in a spiritual disorientation taking him further from finding his created purpose.
—A. W. Tozer
The Purpose of Man, 28
Seeing there is a God, let us labour to get an interest in Him. “This God is our God” (Ps 48:14). Since the fall we have lost likeness to God, and communion with God; let us labour to recover this lost interest, and pronounce this Shibboleth, “My God” (Ps 43:4). It is little comfort to know there is a God, unless He be ours. God offers Himself to be our God. “I will be their God” (Jer 31:13). And faith catches hold of the offer, it appropriates God, and makes all that is in Him over to us to be ours; His wisdom to be ours, to teach us; His holiness ours, to sanctify us; His Spirit ours, to comfort us; His mercy ours, to save us. To be able to say, God is mine, is more than to have all mines of gold and silver.
A Body of Divinity
Sin has made men worship either (1) a false God, which is idolatry; or (2) God falsely, which is superstition. Man has become such a fool that his worship, till enlightened and converted, is either a breach of the First or Second Commandment. He fails as to the object or the manner of worship, and both speak man’s folly, that his religion is either idolatry or superstition.
The Sinfulness of Sin, 55.