Since human nature was altered by the fall, God the Word became man in order to heal mortal and corruptible human nature in himself by uniting it with immortality and incorruptibility.
Through the incarnation, the infinite God has shown that an inseparable union between God and man is perfectly normal, natural, and fitting for a human being.
In the God-man, God becomes man and man becomes God.
Hence, the incarnation itself reveals that salvation is nothing less than deification in Christ or union with God.
As the incarnation naturally points toward deification, it also gives meaning and purpose to every aspect of human existence.
Father Alexis Trader, Ancient Christian Wisdom