And now, Father, glorify thou me in thy own presence with the glory which I had with thee before the world was made. John 17:5, RSV. LHU 16.1
While God's Word speaks of the humanity of Christ when upon this earth, it also speaks decidedly regarding His pre-existence. The Word existed as a divine being, even as the eternal Son of God, in union and oneness with His Father. From everlasting He was the Mediator of the covenant, the one in whom all nations of the earth, both Jews and Gentiles, if they accepted Him, were to be blessed. “The Word was with God, and the Word was God” (John 1:1). Before men or angels were created, the Word was with God, and was God. LHU 16.2
The world was made by Him, “and without Him was not any thing made that was made” (verse 3). If Christ made all things, He existed before all things. The words spoken in regard to this are so decisive that no one need be left in doubt. Christ was God essentially, and in the highest sense. He was with God from all eternity, God over all, blessed forevermore. LHU 16.3
The Lord Jesus Christ, the divine Son of God, existed from eternity, a distinct person, yet one with the Father. He was the surpassing glory of heaven. He was the commander of the heavenly intelligences, and the adoring homage of the angels was received by Him as His right. This was no robbery of God. “The Lord possessed me in the beginning of his way,” He declares, “before his works of old. I was set up from everlasting, from the beginning, or ever the earth was. When there were no depths, I was brought forth; when there were no fountains abounding with water. Before the mountains were settled, before the hills was I brought forth: while as yet he had not made the earth, nor the fields, nor the highest part of the dust of the world. When he prepared the heavens, I was there: when he set a compass upon the face of the depths” (Proverbs 8:22-27). LHU 16.4
There are light and glory in the truth that Christ was one with the Father before the foundation of the world was laid. This is the light shining in a dark place, making it resplendent with divine, original glory. This truth, infinitely mysterious in itself, explains other mysterious and otherwise unexplainable truths, while it is enshrined in light, unapproachable and incomprehensible.... LHU 16.5
“The people which sat in darkness saw great light; and to them which sat in the region and shadow of death light is sprung up” (Matthew 4:16). Here the preexistence of Christ and the purpose of His manifestation to our world are presented as living beams of light from the eternal throne (Selected Messages 1:247, 248). LHU 16.6
[Christ] says, and let My glory shine forth—the glory which I had with Thee before the world was (The Signs of the Times, May 10, 1899). LHU 16.7