Interesting, Romans 5:19 is pretty much impossible for Calvinists to refute because they teach a limited atonement in essence; since only those whose choice God foreknew, are saved therefore the blood of Christ will only atone for a few in their view. Furthermore selfish Calvinists take the verse out of context by saying “many” is less than all. The context clearly shows that every human being was constituted a sinner by Gods will and later on will be saved by God’s will. Otherwise what is the point of emphasising “THE many” in both parts of the verse.
Obadiah 1:21 calls these people “Saviours”. It is quite peculiar why they are called saviours, I mean who or what are they saving? I mean If most of creation is destined to burn for eternity how can these verses make sense
Romans 8:20-22 “ for to vanity was the creation made subject -- not of its will, but because of Him who did subject it -- in hope, that also the creation itself shall be set free from the servitude of the corruption to the liberty of the glory of the children of God; for we have known that all the creation doth groan together, and doth travail in pain together till now”

Actually in 1 corinthians 15:22 the word used is "zoopoiethesontai" and this is a future passive verb meaning to vivify, to make alive beyond the reach of death. The Greek word "anastasis" means resurrection and is used in verse 21 of the same chapter. We know that Jesus resurrected several people as recorded in the Gospels, but that does not mean they received unending life at that point.
Even more the context is about every man being saved, since 1 corinthians 15:22-24 says “for even as in Adam all die, so also in the Christ all shall be made alive, and EACH in his proper order, a first-fruit Christ, afterwards those who are the Christ's, in his presence then -- the end, when he may deliver up the reign to God, even the Father, when he may have made useless all rule, and all authority and power”

Selfish calvinists believe Christs blood will atone for a few therefore they preach a limited atonement. Others will disguise atonement by saying "potential" unlimited atonement; yet we know several haven't even so much as heard of Christ; I mean how will Adam be saved, King solomon be saved e.t.c. when there is no name under heaven but Jesus to save them? Interesting