Only the Father knows perfectly the Son. He therefore appreciates the Son as He deserves. This we dare not say, though we have the Son, and love Him and delight in Him, and all this by the Spirit of God in our measure. And this is fellowship with the Father in the Son Jesus Christ.
But how have we fellowship with His Son? It is in the Father, who is His Father and our Father. The Son was in eternal relationship as such with the Father, and He was pleased in communion with His Father's will and grace to make Him known to us as our Father (compare John 20:1717Jesus saith unto her, Touch me not; for I am not yet ascended to my Father: but go to my brethren, and say unto them, I ascend unto my Father, and your Father; and to my God, and your God. (John 20:17)). It was not enough to show us the Father. This would have sufficed the Apostle Philip, but not divine love. He would be our Father and have us His children, and so we are now, and thus have fellowship with the Son by grace, as the Father has the Son in the rights of Deity.
Thus we have fellowship with the Father in the possession of the Son, and fellowship with the Son in the possession of the Father. How could our joy but be full? [23]