An Aspect of the Atonement of Jesus Christ

In the Book of Mormon, another testament of Jesus Christ, in the seventh chapter of Alma, verse 13, we read:

“Now the Spirit knoweth all things; nevertheless the Son of God suffereth according to the flesh that he might take upon him the sins of his people, that he might blot out their transgressions according to the power of his deliverance; and now behold, this is the testimony which is in me.”

So, did Christ need to suffer in the flesh or could he have experienced it through the Holy Ghost?  As, the Spirit of the Lord or the Holy Gost knows all things, as it is one with God (3 Nephi 11:27 And after this manner shall ye baptize in my name; for behold, verily I say unto you, that the Father, and the Son, and the Holy Ghost are one; and I am in the Father, and the Father in me, and the Father and I are one. — Doctrine & Covenanants 20:28 Which Father, Son, and Holy Ghost are one God, infinite and eternal, without end. Amen.).

Answer: he had to/needed to/must have suffered in the flesh for the bowels of mercy to have been activated and for the intelligences of the Universe to have been pained and cried for the injustice--it couldn't have been just a mental exercise or something that could be passed-through through-the-omniscience-of-the-Spirit, but blood had to be spilt--come from every pore!

JPS