John1:5

This is the message (of God’s promised revelation) which we have heard from Him and now announce to you, that God is Light (He is holy, His message is truthful, He is perfect in righteousness), and in Him there is no darkness at all (no sin, no wickedness, no imperfection).

The God of light sent Jesus as a message of revelation and truth down to earth for our salvation. There is no darkness, sin, wickedness, or imperfection in God. Yet God still stretches out His hand to save us as sinners and redeem us for eternal life. Salvation is the message of love that God sent through His son Jesus to us who will believe in Him.