Christ is revealed to us through the Bible. All Scripture is inspired by the Holy Spirit (2 Timothy 3:16). He reveals Christ in Messianic prophecies and promises of the Old Testament, as well as the fulfillment and assurance of those promises in the New Testament. 
Christ is revealed to us through the Old Testament, with foreknowledge and vision given to the prophets. The Holy Spirit revealed Christ in prophecy. Today, the same Holy Spirit reveals Christ to us. Scripture is the revelation of the Holy Spirit, given through the prophets and apostles (Ephesians 2:20). Christ is the Revelation (Revelation 1:1).
Christ is revealed to us by the Holy Spirit. He opens our eyes of understanding to see the light of Christ (John 1:9). Without the Holy Spirit, the purpose and point of God's truth is not seen (John 16:13). The hymn Amazing Grace includes these words, "I once was blind, but now I see." That's spiritual blindness, but the Holy Spirit opens our eyes of understanding to see the truth of Jesus Christ our Lord.
