The Gospel call is to the redeemed !
22 I have blotted out, as a thick cloud, thy transgressions, and, as a cloud, thy sins: return unto me; for I have redeemed thee.
or in NT language 2 Cor 5:19-20
19 To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation.
20 Now then we are ambassadors for Christ, as though God did beseech you by us: we pray you in Christ's stead, be ye reconciled to God.
The Gospel call to the redeemed, is that they [having been redeemed] return to the Lord. They do not return to the Lord to get redeemed, or to get their transgressions blotteth out, or their sins forgiven, but because God hath already done that for them [through Christ], hence the Gospel is the Good News of ones's Salvation or Redemption, and Forgiveness Eph 1:7-13313
7 In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace;
8 Wherein he hath abounded toward us in all wisdom and prudence;
9 Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself:
10 That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him:
11 In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will:
12 That we should be to the praise of his glory, who first trusted in Christ.
13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
And so the Gospel is not an offer for men to make a choice about, but its informative to those who have a full Redemption through Christ.
Redemption takes into account the forgiveness of sins.
The ones in 2 Cor 5:20 are being reconciled by the call because they had no sins laid to their charge Vs 19, that fact meant they were already forgiven and redeemed before their call ! And that is the corresponding point of the call in Isa 45:22 !