How does salvation affect man’s will?
Christ’s salvation enables man to be born again. That is, born of the Spirit. Through regeneration man’s heart is able to rightly choose because of his new nature. Man was created in the image of God. That image though it remains is marred by the fall. God’s salvation restores man to what he would have been before he was affected by the consequences of rebellion.
2:1 And you He made alive, who were dead in trespasses and sins, 2 in which you once walked according to the course of this world, according to the prince of the power of the air, the spirit who now works in the sons of disobedience, 3 among whom also we all once conducted ourselves in the lusts of our flesh, fulfilling the desires of the flesh and of the mind, and were by nature children of wrath, just as the others. 4 But God, who is rich in mercy, because of His great love with which He loved us, 5 even when we were dead in trespasses, made us alive together with Christ (by grace you have been saved),
Adam is the federal head of mankind. Because of his choice; the fall in the garden, man inherited a sin nature. Man became bound in the choices he made because of this sinful nature. Christ became the second Adam making possible for mankind to be born-again and to receive a new nature. If man receives Christ’s salvation he is given a new nature and become capable of making right choices. Man is not perfectly holy at this point, but is given right standing before a holy God. Salvation then, by the power of the Holy Spirit, has it outworking in man. Man becomes more and more transformed into his former glory.
1 Cor 15:44-49
45 And so it is written, "The first man Adam became a living being." The last Adam became a life-giving spirit. 46 However, the spiritual is not first, but the natural, and afterward the spiritual. 47 The first man was of the earth, made of dust; the second Man is the Lord from heaven. 48 As was the man of dust, so also are those who are made of dust; and as is the heavenly Man, so also are those who are heavenly. 49 And as we have borne the image of the man of dust, we shall also bear the image of the heavenly Man.