What is God?

A4: God is a Spirit^[1], infinite^[2], eternal^[3], and unchangeable^[4], in his being^[5], wisdom^[6], power^[7], holiness^[8], justice^[9], goodness, and truth^[10].

1. John 4:24
2. Job 11:7-9
3. Psalm 90:2
4. James 1:17
5. Exodus 3:14
6. Psalm 147:5
7. Hebrews 1:3
8. Revelation 4:8
9. Revelation 15:4
10. Exodus 34:6-7

For further study see:

1. WLC 7
2. Learn the story behind this question:  Westminster Divine George Gillespie
3. R.C. Sproul on God’s unchanging nature:
   
4. R.C. Sproul on “The Holiness of God”
   
5. Dr. Dennis Prutow explains WSC 4
   
6. Dr. R.C.Sproul explains the aseity of God (i.e God’s eternality and self-existence)