The Son of God became fully human by incarnation.  He became human to show us in flesh and blood what God is like and thus at the same time show us what we are to be like.  God is like Jesus.  Jesus was the ideal human.  That is what Jesus came to show us.  We are to be like Jesus and thus like God; the plan is to be restored in the Divine Likeness.  He sends the Third member of the Holy Trinity, the Holy Spirit, who is Himself God, to live in us, to make us like God, and to prepare us to be joined to God.

“And we, who with unveiled faces all reflect the Lord’s glory, are being transformed into his likeness with ever-increasing glory, which comes from the Lord, who is the Spirit.” 2 Corinthians 3:18 (NIV)