Dear 100 Hour Board,
Sorry if this question seems a little morbid.
We know from Moroni 8 that little children don't need repentance or baptism which is why we don't practice infant baptism. So if a child dies before the age of 8, can/are they baptized by proxy in the temple? I think the answer is no but what about other temple ordinances? Do they receive them by proxy?
(I think this next question is OK to ask but if the editors feel it's not feel free to remove it:) Suppose someone received the Melchizedek priesthood/was ordained an elder but died before receiving his endowment. When his temple work is done would the proxy ordination to the Melchizedek priesthood not be performed? And I guess I also have a similar question if someone were baptized but died before being confirmed.
-My Name Here
I just found out at the temple that the only ordinance children who die before age 8 need is the sealing to their parents (if they weren't born in the covenant). I think this is for the same reason we don't baptize them before they reach the age of 8 if they're alive, as found in the chapter you referenced.
This 1977 article expounds,
"Are all little children saved automatically in the celestial kingdom?
"To this question the answer is a thunderous yes, which echoes and re-echoes from one end of heaven to the other. Jesus taught it to his disciples. Mormon said it over and over again. Many of the prophets have spoken about it, and it is implicit in the whole plan of salvation. If it were not so the redemption would not be infinite in its application. And so, as we would expect, Joseph Smith’s Vision of the Celestial Kingdom contains this statement: 'And I also beheld that all children who die before they arrive at the years of accountability are saved in the celestial kingdom of heaven.' (D&C 137:10)
"...They are saved through the atonement and because they are free from sin. They come from God in purity; no sin or taint attaches to them in this life; and they return in purity to their Maker. Accountable persons must become pure through repentance and baptism and obedience. Those who are not accountable for sins never fall spiritually and need not be redeemed from a spiritual fall which they never experienced. Hence the expression that little children are alive in Christ. 'Little children are redeemed from the foundation of the world through mine Only Begotten,' the Lord says. (D&C 29:46.)"
To your next question, I believe the only work that needs to be done by proxy is work that hasn't already been done.