None of the reformers, to my knowledge, posited that Jesus' Deity was "on loan" and subject to be recalled [ like a drivers license ].
Ellen White
Though Christ humbled Himself to become man, the Godhead was still His own. His Deity could not be lost WHILE He stood faithful and true to His loyalty. Surrounded with sorrow, suffering, and moral pollution, despised and rejected by the people to whom had been intrusted the oracles of heaven, Jesus could yet speak of Himself as the Son of man in heaven. He was ready to take once more His divine glory when His work on earth was done
If Christ DIDN'T stand faithful and loyal to God's Law then Christ would have LOST His Deity. Not unlike a driver can loose their drives license IF they are convicted of drunk driving.
If you would not quote only part of the context, you would see how White defines the words:
"... But although Christ's
divine glory was
for a time veiled and eclipsed by His assuming humanity, yet He did not cease to be God when He became man. The human did not take the place of the divine, nor the divine of the human. This is the mystery of godliness. The two expressions human and divine were, in Christ, closely and inseparably one, and yet they had a distinct individuality. Though Christ humbled Himself to become man,
the Godhead was still His own.
His Deity could not be lost while He stood faithful and true to His loyalty. Surrounded with sorrow, suffering, and moral pollution, despised and rejected by the people to whom had been intrusted the oracles of heaven, Jesus could yet speak of Himself as the Son of man in heaven. He was
ready to take once more His divine glory when His work on earth was done. ..."
Did you just see how White was using the words? Jesus, while taking "the form of a servant" (humanity, fallen sinful flesh) upon Himself, He 'set aside' relying upon His Deity, or His divine glory, or His Godhead, to overcome the world, by relying only upon His Father, by and through the Holy Ghost. He, as "the man" Christ Jesus, had to endure the trials and temptations as every other man, and had to overcome where Adam, the first had failed. Thus all of His "divine glory" was still His own, but was only 'taken back up' after His victory (think of it like a 'vow' (Psalms 116:14,18) of silence, or vow of 'poverty', in that the voice or riches, were still His own, but chose not to use such for a period of time and were under condition), and being glorified in the resurrection and so:
Mat_28:18 And Jesus came and spake unto them, saying,
All power is given unto me in heaven and in earth.
He was free again from the restriction, He Himself had laid upon Himself.
Did you read the part of the citation, in regards "Though Christ humbled Himself to become man, the Godhead was still His own ..."
The context is of the "man" Jesus Christ. If Jesus, "the man", had sinned (He didn't by choice), Jesus, "the man", the second man (last Adam), would have been forever lost, and would come to eternal death, and the whole of the human race with Him.
"...
(same context) For
a period of time Christ was on probation.
He took humanity on Himself, to stand the test and trial which the first Adam failed to endure. Had He failed in His test and trial, He would have been disobedient to the voice of God, and
the world would have been lost. ..."
- {ST, May 10, 1899 par. 6}
Joh_17:5 And now, O Father,
glorify thou me with thine own self with the glory which I had with thee before the world was.
How could "the man" Christ Jesus pray such an prayer if He had not 'set aside' voluntarily that which was His own? Roman Catholicism's doctrine cannot understand the "mystery of godliness", and therefore rejects "the flesh" of Jesus Christ, and everything that it means to us in His overcoming it.
White is citing and referring to numerous texts here. Philippians 2; 1 Corinthians 15, John 16:33; Revelation 3:21, Hebrews, etc.
How could Jesus say that He "overcame", and had "overcome" the world, if there were no such striving, no such testing?
Heb 5:7
Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto
him that was able to save him from death, and was heard in that he feared;
Heb 5:8 Though he were
a Son, yet
learned he obedience by the things which he suffered;
Heb 5:9 And
being made perfect, he
became the author of eternal salvation unto all them that obey him;
Jesus, by becoming man, was on probation as every man, since Adam. Jesus was the second Adam, and so, likewise, given time, as the first:
1Co 15:44 It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body.
1Co 15:45 And so it is written, The first man Adam was made a living soul;
the last Adam was made a quickening spirit.
1Co 15:46 Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual.
1Co 15:47 The first man is of the earth, earthy:
the second man is the Lord from heaven.
"...
(same context) Christ emptied Himself of His honored position in the heavenly courts. He became a man of sorrows and acquainted with grief. He was, as we are, subject to the enemy's temptations. ..."
- {ST, May 10, 1899 par. 8}
Php 2:5 Let this mind be in you, which was also in Christ Jesus:
Php 2:6 Who, being in the form of God, thought it not robbery to be equal with God:
Php 2:7 But
made himself of no reputation, and took upon him the form of a servant, and was made in the likeness of men:
Php 2:8 And
being found in fashion as a man, he humbled himself, and
became obedient unto death, even the death of the cross.
Php 2:9 Wherefore God also hath highly exalted him, and given him a name which is above every name:
Read also Isaiah 53:1-12 which White also just referenced in the same context.
Thus even in the wilderness, Jesus was being tested, by the Pharisees, and Saduccees and Herodians, and Rome, and so in Gethsemane, and Calvary and during His whole life upon the earth:
Psa 12:6 The words of the LORD are pure words: as silver tried in a furnace of earth, purified seven times.
Psa 12:7 Thou shalt keep them, O LORD, thou shalt preserve them from this generation for ever.
Jesus Christ, the word, went through the trials. He is preserved, even as the golden pot of mana was preserved.
"... (same context) Christ's ascension to heaven, amid a cloud of heavenly angels, glorified Him. His concealed glory shone forth with all the brightness that mortal man could endure and live.
He came to our world as a man;
He ascended to His heavenly home as God. ..."
- {ST, May 10, 1899 par. 15}
Jesus, came as a man, to be among mankind and to lead them out. Jesus took hold of His Father, through faith, and therefore gave us the example:
"... Jesus Christ who gave His life a sacrifice for man, that humanity might lay hold upon divinity.Christ was sent into the world and they crucified Him in the most cruel manner, but He was not left in the grave. He came up, and proclaimed over the sepulcher, He proclaimed the resurrection. He was the life and the strength and the grace through the obedience in His humanity.
He did not lose His divinity. He held fast His divinity. They saw humanity and divinity combined. There they were combined, and that is what God wants of us today. ..."
- {Ms 120, 1909}
Through this, and laying hold upon Jesus Christ, we too can overcome, even as He overcame, in the very fallen sinful flesh we have, He bore to the cross, condemning sin in the flesh, nailing it to His cross. In Him, we are offered the same, that we might be
"partakers" of the divine nature.
Daniel 10:13, Gabriel speaking)