Christ worked out his own salvation with fear and trembling. Joseph Smith has the classic quote on this:
"What did Jesus do? Why; I do the things I saw my Father do when worlds come rolling into existence. My Father worked out his kingdom with fear and trembling, and I must do the same" (Teachings of the Prophet Joseph Smith page 347).
Bruce R McConkie taught this in a few places. One was here, coupled with a relevant scripture from Hebrews
"Christ worked out his own salvation.
This is something of which uninspired men have no comprehension. Truly, he was the Lord Omnipotent before the world was; truly, he was like unto the Father in the premortal life; truly, he was the Son of God here on earth—and yet, with it all, as with all the spirit children of the same Father, he too was subject to all of the terms and conditions of the Father’s plan. He also was born on earth to undergo a mortal probation, to die, to rise again in immortal glory, to be judged according to his works, and to receive his place of infinite glory in the eternal kingdom of his Everlasting Father. How well Paul said: 'Though he were a Son, yet learned he obedience by the things which he suffered; And being made perfect, he became the author [that is, the cause] of eternal salvation unto all them that obey him.' [Hebrews 5: 8–9]" (Bruce R McConkie, "The Mystery of Godliness", BYU Speeches 6 January 1985)