How can I know God?

In God’s fullness he is unknowable (Exodus 33:20, John 1:18; 6:46; 1 Timothy 6:16, cf. Isaiah 6:1-3).

In General Revelation God makes himself known through His creation, consider the words of Paul in Romans 1:20: “For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.” (cf. Romans 2:1; Psalm 8:3-4).

In Special Revelation God has revealed himself to people and inspired prophets and apostles to write the scriptures. Exodus 3:14-15 and 33 recount Moses’ interaction with God, Romans 16:25-27, 2 Timothy 3:16. Most notably 2 Peter 1:20-21 suggests the words of scripture did not come from man but from God’s revelation: “knowing this first of all, that no prophecy of Scripture comes from someone’s own interpretation. For no prophecy was ever produced by the will of man, but men spoke from God as they were carried along by the Holy Spirit.”

In the incarnation God is revealed in and through the person of Jesus Christ (John 1:17-18; 14:9; 1 Corinthians 15:47-49, Colossians 1:15; 2:9, cf. Isaiah 1:9-11, Jeremiah 31:31-34, Amos 5:24-27, John 1, Philippians 2:6-8).