Are you not aware that sin causes spiritual death?
Luke 15:24 (NASB)
24 for this son of mine was dead and has come to life again; he was lost and has been found.' And they began to celebrate.
the bible never uses the tern 'spiritual death' , but whatever it is you think you mean by making up new terms , it apparently is not terminal according to your quote...
in my understanding the scriptures you mention only signify that anyone of the MANY who refuse the narrw way of loving others will die because of sin and so is 'already dead' because they are determined not to give up sin, so will receive its wages, death...
but the few mostly die too, the difference being that those saints which die [most saints] they take part in the first resurrection of saints, who will be translated together with those who didn't die , at Jesus' return...
but all the rest of mankind alive and billions who died sinners still cannot live again until the resurrection of the unjust , we know they are destroyed [Matt 7:13] but nevertheless Jesus says that countless amny are later saved [Rev 7:9-10] ... how ? ... the only indestructible part of a man is his spirit which always returns to God :-
Ecclesiastes 12:7 Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.
the body without the spirit has no soul [life] :-
Genesis 2:7 And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man
became a living soul.
thus it is the same in the resurrections, it is the indestructible spirit of a man by which men are brought back to life in the body... we know it is in the body because Jesus showed us it is in the flesh :-
Luke 24:39 Behold my hands and my feet, that it is I myself: handle me, and see; for
a spirit hath not flesh and bones, as ye see me have.
thus in fact the spirit is of God, it is not even subject to death , but the body without the spirit is dead, soul-less ...
the only differenece between saints and sinners is that sinners spirits have to be returned to life until they learn to freely choose to love others and so find happiness in life as God wills we all shall do eventually... but only the few in this life [matt 7:14. Rev 7:3-8], countless many in the next [Rev 7:9-10] even though they were destroyed in this life [Matt 7:13]
most important in the process of salvation though is baptism of 'fire' :-
Luke 3:16 John answered, saying unto them all, I indeed baptize you with water; but one mightier than I cometh, the latchet of whose shoes I am not worthy to unloose: he shall baptize you with the Holy Ghost and with fire:
which we KNOW from the saints is not literal , but is the trial of love in life by longsuffering the sinners of this and the next world , the way God PERFECTS love in saints before they can be translated [freed from the need to live again , freed from death]
1 Peter 1:7 That the
trial of your faith, being much more precious than of gold that perisheth, though it be
tried with fire, might be found unto praise and honour and glory at the appearing of Jesus Christ:
so now one can understand the final baptism of fire in the lake of fire for all who sin in the next life ... by then they are only the most evil of men and God has removed by translation all their easy prey in this life and the next, so the evil are left preying on themselves, poetic justice which is pretty terrible for them, concentrated evil convinces them progressively that they made a mistake , evil used to benefit them some ways, but in the final trial it is just misery ... so as Jesus states .[Rev 5:13] all will accept him... the lake of fire convinces even the most evil that love is the better way and God is love, His mercy endures once folks repent truly all their sin... so we see why Jesus is right, all will accept him, but not all at the same time , only few in this life and they the kings and priests whoready the kingdom come where countless many freely choose love because it is a perfectly loving way of life in teh kingdom and sinners are simply cast outside until they see that sin hurts them just as much as they hurt otehrs by sinning... finally the truth of love sinks in, that we can all be happy in life only by loving one another ... God's law is PROVEN , God shopwn to be right for ALL ... esle He would not be God and saviour of all... some would have a different god ...not possible
Deuteronomy 32:39 See now that I, even I, am he, and
there is no god with me: I kill, and I make alive; I wound, and I heal:
neither is there any that can deliver out of my hand.
Revelation 21:4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.