[Matthew 20:28 NASB95] 28 just as the Son of Man did not come to be served, but to serve, and to give His life a ransom for many."
[Mark 10:45 NASB95] 45 "For even the Son of Man did not come to be served, but to serve, and to give His life a ransom for many."
[John 10:11, 15 NASB95] 11 "I am the good shepherd; the good shepherd lays down His life for the sheep. ... 15 even as the Father knows Me and I know the Father; and I lay down My life for the sheep.
[John 10:25-29 NASB95] 25 Jesus answered them, "I told you, and you do not believe; the works that I do in My Father's name, these testify of Me. 26 "But you do not believe because you are not of My sheep. 27 "My sheep hear My voice, and I know them, and they follow Me; 28 and I give eternal life to them, and they will never perish; and no one will snatch them out of My hand. 29 "My Father, who has given [them] to Me, is greater than all; and no one is able to snatch [them] out of the Father's hand.
[Mat 25:32-33 NASB95] 32 "All the nations will be gathered before Him; and He will separate them from one another, as the shepherd separates the sheep from the goats; 33 and He will put the sheep on His right, and the goats on the left.
Yes, the rejectors will be divided from the believers AND Jesus knew their thoughts (those he called goats) so He had that ability (being the Spirit of prophecy), HOWEVER when Jesus was on the cross he said "Father forgive them for they don't know what they are doing" speaking for all those who had their hands in the crucifixion, keep in mind that He was at the time abandoned by Judas and Peter and at the darkest hour believed that even GOD had rejected Him. Abandoning and rejection are practically the same in this case for Jesus knows that the Father exists (so He didn't doubt that) but He DID feel hopelessly abandoned and rejected by God at his weakest.
Could you even imagine that feeling? That feeling was the lowest to the point of doubting His own Father, as if spiritually crushed due to the weight of universal Sin.
"Dying for many" was simply realistic and for a the Spirit of Prophecy it was known that not everyone will enter through the narrow gate.
You can call it whatever you want, but I don't believe Christ died for a small amount of sins, he took on the sins of the world upon his shoulders... You say not a drop of blood was wasted, I agree, nor was there any sin spared that Jesus could not atone for -save the one unforgivable sin which is exactly what the "goats" were commiting.
Furthermore, as the repented thief received the promise of everlasting life on his death bed (so to speak), I assume many lifelong unbelievers have a conscious act of repentance upon the hour of death or even at the tiniest fraction of a second unto death.
All Sin is overcome and forgiven along with exemption from death unto Eternal Life for ALL THE WORLD however ANYONE can voluntarily refuse this forgiveness along with the promise of eternal life by rejecting Christ as their willing substitute so to remain condemned. The Elect are known to God, those of the 2nd resurrection are not all destined to Hell, those who are written in the book of life and are found righteous in their meekness before God, although ignorant of the Gospel of Salvation, shall be granted Mercy from God who is merciful, they shall inherit the earth, all others of the 2nd resurrection not found in the book of life will face the second death, these include those who have willfully rejected Christ as their savior and those who have earned their own rewards in life through the workings of iniquity (regardless of receiving the message or not), the false prophets, the breakers of the unforgivable sins, all workers of iniquity.