The Bible and the Nicene Creed teach that the Son is fully God. They also teach that he receives the absolute fullness of Divinity from God the Father. In other words, the Son is true God, because the Father has eternally given him the Divine essence. The Bible and the Nicene Creed also tell us that the Father and the Son are one, which means they always work together. These truths are expressed in Matthew 11:27; 28:18-19; John 1:18; 3:35; 5:17-23, 26-27; 10:29-30, 38; 14:9-11; 16:15; 17:1-2, 5, 10-11, 21-25; Philippians 2:9-11; Colossians 1:15-20; Hebrews 1:3; and 1 John 2:23. The Nicene Creed speaks of "the only Son of God, eternally begotten of the Father, God from God, Light from Light, true God from true God, begotten, but not made, of one being with the Father."
To avoid misunderstanding it is important to explain the Christian belief about the generation of the Son and the Incarnation. God has perfect Knowledge of himself for all eternity. This knowledge may be called the Word. This Word is eternal because God is eternal and his intellect is always in perfect action. God is perfectly one, which means this Word is one with all God's attributes. In other words, this Word is infinite, all-powerful, all-knowing, truth, goodness, existence, life, love, spirit, eternal, and uncreated, which means this Word is God. This Word is perfectly one with God. The Word is called the Son because he may be described as intellectually generated. God may be called the Father because he may be described as intellectually generating the Word.
Two thousand years ago the eternal Word of God became Human and entered human history. This took place by the Son of God the Father perfectly uniting a human nature to himself. All human beings have a limited union with God. God is existence, life, love, truth, goodness, wisdom, and power. Our existence and life, and all the love, truth, goodness, wisdom and power among us, is merely a limited sharing in God. The Incarnation consists in this sharing being raised to the highest possible level, by the Word of God taking a human nature to himself. In other words, Jesus Christ is one Person with two natures, a Divine nature and a Human nature.
Jesus Christ is all-powerful, which means he is truly God. The chapter of John's Gospel quoted by the Muslim writer clearly demonstrates this. "Whatever the Father does, the Son does likewise... just as the Father raises the dead and gives them life, so also the Son gives life to whoever he wishes... the hour is coming when the dead will hear the voice of the Son of God, and those who hear will live" (John 5:19, 21, 25). The truth that the Son raises the dead, gives life, and does everything the Father does, means he must have infinite power. To possess infinite power is to be God, so the Son must be God.
The Son receives his infinite power from the Father, because he receives the fullness of Divinity from the Father. In other words, the Son is all-powerful, because the Father gives him infinite power. Also, the Son is one being with the Father, so he never works by himself, but always works with the Father. These are the reasons why Jesus says, "the Son can do nothing on his own, but only what he sees the Father doing" and "I can do nothing on my own." These words do not imply that the Son is not God, but express the truth that the Son receives the fullness of Divinity from the Father, and is perfectly one with the Father.
