As a personal being, God has revealed Himself in His Son. Jesus, the outshining of the Father’s glory, “and the express image of His person,” was on earth found in fashion as a man. As a personal Saviour, He came to the world. As a personal Saviour, He ascended on high. As a personal Saviour, He intercedes in the heavenly courts. Before the throne of God in our behalf ministers “One like unto the Son of man.”
Christ, the light of the world, veiled the dazzling splendor of His divinity, and came to live as a man among men, that they might, without being consumed, become acquainted with their Creator. No man has seen God at any time, except as He is revealed through Christ.
“I and My Father are one,” Christ declared.... Christ came to teach human beings what God desires them to know. In the heavens above, in the earth, in the broad waters of the ocean, we see the handiwork of God. All created things testify to His power, His wisdom, His love. But not from the stars or the ocean or the cataract can we learn of the personality of God as it is revealed in Christ.
God saw that a clearer revelation than nature was needed to portray both His personality and His character. He sent His Son into the world to reveal, so far as could be endured by human sight, the nature and the attributes of the invisible God.... He is the divine Teacher, the Enlightener. Had God thought us in need of revelations other than those made through Christ, and in His written Word, He would have given them.—Testimonies for the Church 8:265. WGD 5
“Let not your heart be troubled,” He said. “Ye believe in God, believe also in Me. In My Father's house are many mansions: if it were not so, I would have told you. I go to prepare a place for you.... “Thomas saith unto Him, Lord, we know not whither Thou goest; and how can we know the way? Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by Me. If ye had known Me, ye should have known My Father also: and from henceforth ye know Him, and have seen Him... “Lord, show us the Father,” said Philip, “and it sufficeth us. Jesus saith unto him, Have I been so long time with you, and yet hast thou not known Me, Philip? he that hath seen Me hath seen the Father; and how sayest thou then, Show us the Father? Believest thou not that I am in the Father, and the Father in Me? the words that I speak unto you I speak not of Myself: but the Father that dwelleth in Me, He doeth the works.” John 14:1-10. The disciples did not yet understand Christ's words concerning His relation to God. Much of His teaching was still dark to them. Christ desired them to have a clearer, more distinct knowledge of God... MH 419-420
My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father’s hand. I and my Father are one. John 10:29-30, KJV