His Death actually saves them He died for !
1 Pet 2:24
24 Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed.
And believers may testify to this because believing is but an evidence of healing or of being saved.
Scripture is plain here that Salvation comes through Christ's death, or stripes or wounds.
The word heal here in 1 Peter 2:24 is the greek word iaomai and means to:
to cure, heal
2) to make whole
a) to free from errors and sins, to bring about (one's) salvation
The healing here is not physical but of spiritual disease and because its the Lord, its a supernatural healing.
In Isa 53:5 the word literally means that healing has come to us, its like what Paul says Rom 5:18, so spiritual healing is the free gift that comes to all whom Christ died !
That healing means Salvation is implied here Jer 17:14
14 Heal me, O Lord, and I shall be healed; save me, and I shall be saved: for thou art my praise.
Also Christ's Death, Stripes or Wounds, for all those whose sins He bare 1 Pet 2:24
"Who his own self bare our sins in his own body on the tree"
His stripes shall heal their deadly wound of spiritual death brought upon them by sin Rev 13:3
3 And I saw one of his heads as it were wounded to death; and his deadly wound was healed: and all the world wondered after the beast.
The principle being here that something that was considered dead, as all for whom Christ died are by nature Eph 2:5
5 Even when we were dead in sins, hath quickened us together with Christ[Healed], (by grace ye are saved or healed)
Yes, Healing experimentally comes by quickening.
Ecclesiastes 3:3
3 A time to kill, and a time to heal; a time to break down, and a time to build up;
Here healing appears to be the reversal of killing or putting to death !
But by Christ's Death / Stripes those He died for are healed by sins death wound, for the wages of sin is death, but the gift of God is healing from death !
Notice 1 Peter 2:24
24 Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed.
The healing causes us to be able to Live unto Righteousness, for that was the end and purpose of the stripes, to produce fruit that would live unto God or unto Righteousness , which is to live by Faith, for it is written, the Just [or Righteous] shall live by Faith; So if any of us truly live by Faith, we have Christ's Stripes or Death to Thank for that, for a Life of Faith is by Him as that Gift of God Eph 2:8-9
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: His Death or Stripes is the Gift of God !
9 Not of works, lest any man should boast.
Also this is a serious indictment against all who deny that Christ's Death alone, in and of itself, is what saved those He died for !