Gen 3:15, Eph 2:1-7, 1 Jn 3:8, Col 2:15, Jn 5:24
In the Old Testament it was foretold that God would deliver us through Christ. (Gen 3:15)
Gen 3:15 And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.
We were dead in our sins and trespasses, and we were in the power of darkness. (Eph 2:1-3)
Eph 2:1 And you hath he quickened, who were dead in trespasses and sins; 2 Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience: 3 Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
The God of mercy loves us and has made us alive together with Christ when we were to die in our trespasses. (Eph 2:4-7)
Eph 2:4 But God, who is rich in mercy, for his great love wherewith he loved us, 5 Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;) 6 And hath raised us up together, and made us sit together in heavenly places in Christ Jesus: 7 That in the ages to come he might shew the exceeding riches of his grace in his kindness toward us through Christ Jesus.
God has forgiven all our sins and has crucified all the documents of sin against us. (Col 2:13-14)
Col 2:13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses; 14 Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross;
Jesus destroyed the works of the devil and gained victory through the cross. (1 Jn 3:8, Col 2:15)
1 Jn 3:8 He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
Col 2:15 And having spoiled principalities and powers, he made a shew of them openly, triumphing over them in it.
Those who believe in Jesus as the Christ have passed from death to life. (Jn 5:24, Col 1:13-14)
Jn 5:24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
Col 1:13 Who hath delivered us from the power of darkness, and hath translated us into the kingdom of his dear Son: 14 In whom we have redemption through his blood, even the forgiveness of sins: