Because Jesus is the living Word of God, and because God never changes, then God always was and is like Jesus – always Christlike! God is holy, the way that Jesus is shown to be holy in this Gospel. God is compassionate and caring, sovereign and mighty, just as Jesus reveals in this book. But, most of all, Jesus reveals God’s love for us. “What Jesus did was to open a window in time that we might see the eternal and unchanging love of God” (William Barclay). This is what the greatest verse in John – and, perhaps, in the whole Bible, says: “For God so loved the world, that He gave His only Son” (John 3.16). “We have seen His glory,” John says, “glory as of the only Son from the Father, full of grace and truth” (1.14). If you want to see the glory of God, in His holiness and compassion and might and, especially, in His love, you will find it only in the face of Jesus Christ.
From: “The Word,” a sermon on John 1.1-3, in John: Volume 1: John 1-10 by Richard D. Phillips; Reformed Expository Commentary series (Phillipsburg: P&R Publishing, 2014), p. 13.