Here's a quote from https://www.gci.org/theology that I'll be studying as a part of the introductory course:
God is revealed to us most clearly in the Person of Jesus Christ. Jesus is where God has chosen to make himself visible to us. Jesus is the Word made flesh—God the Son become human. He has revealed himself in a way that we could see him, touch him, hear him and see how he lives. Jesus is the way that God has chosen to reveal himself to us.(The above is quoted from https://www.gci.org/theology)
In John 14:8, Philip asked Jesus: “Lord, show us the Father and that will be enough for us.” Jesus responded in verse 9: “Don’t you know me, Philip, even after I have been among you such a long time? Anyone who has seen me has seen the Father” (New International Version).
Jesus is not saying that God the Father is 5 foot 8 inches tall, with brown hair and a Jewish nose. But he is saying that in his most important respects, his character, purposes, heart, and mind, God the Father is like Jesus Christ – and that is in terms of the way he interacts with others. The compassion that Jesus had shows us exactly what God is like. The zeal for righteousness, that’s what God is like. The willingness to sacrifice for others, God is like that, too. Jesus helps us see what God the Father is like – and the Holy Spirit is like that, too.
When Jesus became incarnated as a flesh-and-blood human being, he was showing us in a tangible and visible way what the Triune God is like. The apostle Paul says, “The Son is the image of the invisible God” (Colossians 1:15). Even though we cannot see God directly, Jesus shows us what he’s like, in a way that we can see and hear.
Colossians 2:9 says, “In Christ all the fullness of the Deity lives in bodily form.” Jesus is the summary we are given of what we need to know about God. We can never know God completely – he is simply much bigger than our minds are capable of comprehending – but we are able to have an accurate understanding of at least some things about God, because Jesus embodies all that any human being can know of God, and he came to reveal God to us.
John 1:18 says, “No one has ever seen God, but the one and only Son, who is himself God and is in closest relationship with the Father, has made him known.”