No one has ever seen God, but God the one and only who is at the Fathers side has made Him known. John 1:18 (NIV)
In this first part of the verse, it says that no one has ever seen God but some verses in the Old Testament talk about so and so seeing the Lord on High and seeing the appearance of God. This catches my attention because both statements cannot be true. What I mean is you cannot both see and never have seen someone at the same time.
If we do some digging we find that Greek definition for the word eōraken (stay with me here I promise not to use anymore Greek right now) means to see, perceive, and attend to. I like to give analogies so here is one. My bride can see me like no one else does. You can see me and you can know me to a point but no one knows me like her, no one sees me like she does. She can look at me and know what I am thinking or feeling. In a similar way, others may have seen a part of the Father or part of His glory but none have seen Him like Jesus sees Him.
Jesus and the Father are one and that means that Christ has and does see the Father in a way that we never can. We are redeemed and saved but I think we will spend eternity in heaven always seeing something new about God. However, Jesus sees the Father completely and wholly.
This brings me to the second point and I will keep it brief. Jesus is God, He is not the first creation, not the most important creation but He is God in flesh. He has always been and will always be. He is part of the Holy Trinity. If someone tries and get you to believe anything other than that about Jesus they are not preaching the Jesus of the Bible.