Q: What is meant by affirming Christ is the Eternal Son of God?
A: By affirming that Christ is the Eternal Son of God, we mean that he has always been the Son of God, the Second Person of the Divine Trinity from all eternity. He did not become the Son of God when he became man nor at any time in history of the created universe.
Q: Whatr is meant by affirming that Christ is one substance with the Father?
A: By affirming that Christ is of one substances with the Father, we mean that her is only one God, and Jesus Christ is this one God just as truly as the Father is this one God. As Christians we do not believe in three God’s, but in one God who exists in three persons: the Father, the Son, and the Holy Spirit. Jesus Christ is therfore notlike God; he is God, the only God that ther is. In Him dwells not a p art of the fullness of the Godhead bodily, but all the fullness of the Godhead bodily (col 2:9)
Q: What is mean by affirming that Christ is equal with the Father?
A: By affirmng that Christ is equal with the Father, we mean that so far as his nature is concerned, Christ is not subordinate to the Father in any way. By rason of his self-humilation, during his life on earth, he was subordinate to the Father in position, for he took upon him the form of a servant. But in nature, even during his life on earth, he was, and is today, fully equal with God the Father. [Johannes G. Vos]