If we as individuals realize we need a savior, then perhaps a possibility for all to be saved may exist.
John 1:9 The true light that gives light to everyone was coming into the world.
John 12:32 "And I, if I am lifted up from the earth, will draw all men to Myself."
1 Tim.2:4who doth will all men to be saved, and to come to the full knowledge of the truth;
5for one [is] God, one also [is] mediator of God and of men, the man Christ Jesus,
6who did give himself a ransom for all — the testimony in its own times —
That is the domain of God, not us, to decide.
Who have been God's enemies? All:
Rom.5:
10 For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life
1 Cor.15:25 For He must reign until He has put all His enemies under His feet.
How many will be "under His feet"? Just enemies or all:
1 Cor.15:27 For “He has put in subjection all under His feet.” But when it may be said that all has been put in subjection, it is evident that the One having put in subjection all to Him is excepted.
So there is only one exception to "all" to be "put...under his feet". Then God will be "in" "all", hence universal salvation:
1 Cor.15:28 And when all shall be subjected unto him, then shall the Son also himself be subject unto him that put all under him, that God may be all in all.
God as "all in all" (1 Cor.15:28) has nothing to do with authority, but God "in" every being who ever lived. "To say that "all in all" signifies "the manifestation of God's supremacy"...is very far indeed from the truth...When we say "Christ is my all," what do we mean? That He is our Lord? Yes, and our Saviour and Friend and our Lover, our Wisdom and our Righteousness, and our Holiness--He is everything to us!...And that is just what God wishes to be and what He will be!...Will He be this only in some? No! He will be All in all!...we have said that when the last enemy [death] is abolished, then the Son abdicates and God becomes All in all. If there were still enmity we might imagine God being over all, but with all enmity gone, it is easy to see how He can become All in all...The "kingdom" is given up to the Father, after all sovereignty and authority and power have been abrogated. What kind of a "supremacy" will God "fully manifest" which has no power, no authority, no sovereignty? Thank God, all these elements, which characterized government during the eons, will be utterly unnecessary when the Son of God is finished with His "mediatorial" work. Instead of God's supremacy being fully manifested at that time, it will be entirely absent, and God, as Father, will guide His family by the sweet constraint of love."
Any person whether Christian or not, can be saved but that is the Lord’s judgment ( John 5:22-30, Matthew 25:31-46 etc.).
1 Cor.3:15 If any man’s work is burned, he will suffer loss, but he himself will be saved, but as through fire.
Rom 5:18 Consequently, then, as it was through one offense for ALL MANKIND for condemnation, thus also it is through one just act for ALL MANKIND for life's justifying."
Rom 5:19 For even as, through the disobedience of the one man, THE MANY were constituted sinners, thus also, through the obedience of the One, THE MANY shall be constituted just."
It sounds good to tell someone that all will be saved and a terrible deception to those who needed repentance but neglected it when death occurs.
Why wouldn't the good news that all will be saved, even those who choose hell, lead to repentance, as opposed to the doctrine of a sicko for eternity sadist? After all, Scripture doesn't say it is the fear of an eternity of torments that leads to repentance, but the goodness of God that leads to repentance. And we love Him, not because He's got an eternity of torments ahead for us if we don't, but because He first loved us. In fact many millions of unbelievers reject Christ & many millions of others have left the churches because of the sadist for eternity dogma.
Rom.2:4 Or do you despise the riches of His goodness, forbearance, and longsuffering, not knowing that the goodness of God leads you to repentance?
1 John 4:19 We love him, because he first loved us.