Like the Father, Jesus is God. He always was, always is, and always will be. But unlike the Father, Jesus is also a human being. Though charged with blasphemy and crucified for claiming to be one with the Father, Jesus' resurrection validates his claim to be God's Son in a unique way. When we confess our belief that Jesus is the Son of God, we share in the love the Father has for the Son, becoming adopted children of God.
Though Jesus was the Son of God, he was also the Son of Man, a title that emphasizes both his lowliness and his eventual dominion. Near the end of his life, when the high priest asked him whether he was the Son of God, Jesus no longer avoided the title but said that he would one day "see the Son of Man sitting at the right hand of the Mighty One and coming on the clouds of heaven" (Matthew 26:64).
When you pray to Jesus as Son of God and Son of Man, you are praying to the One who is your Brother and your Lord.
"But what about you?" he asked. "Who do you say I am?" Simon Peter answered, "You are the Messiah, the Son of the living God." Jesus replied, "Blessed are you, Simon son of Jonah, for this was not revealed to you by flesh and blood, but by my Father in heaven." Matthew 16:15 - 17