Q: What do the scriptures make known of God?
A: The scriptures make known what God is, the persons in the Godhead, his decrees, and the execution of his decrees.
Q: What is God?
A: God is a Spirit, in and of himself infinite in being, glory, blessedness, and perfection, all-sufficient, eternal, unchangeable, incomprehensible, every where present, almighty, knowing all things, most wise, most holy, most just, most merciful, and gracious, long-suffering, and abundant in goodness and truth.
(Questions VI and VII of the Westminster Larger Catechism.)