The second chapter of the Westminster Confession of Faith addresses the doctrine of God. 

The first paragraph deals with God’s attributes, both those which can be seen reflected in man (communicable attributes) and those which are unique only to God (incommunicable). The latter include His unchangeableness, and various aspects of His infinity, such as regarding time and space. These establish God as far greater than His creation and keep man from assuming some kind of peer-relationship with God who is highly exalted.

At the same time, God shows that His own image is placed on man. Man reflects his Creator in many ways, though the attributes of God that we mirror are not held in the same degree. Man may be wise, but God’s wisdom is without limit. Man may be merciful, but not to the same extent that God shows mercy. 

The second paragraph treats God’s independency, also called His aseity. God does not stand in need of anything to complete Him, neither does He gain any knowledge from His creation.

The third paragraph describes the mysterious nature of the Trinity: “three persons, of one substance, power, and eternity.” These are distinguished from each other by their properties.

Much more could be said, however the summary above is sufficient to direct man to worship. God’s greatness demands that His creation yields to Him any worship, service, or obedience He may require of it.