"“If any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.” 2 Corinthians 5:17 . Through the power of Christ, men and women have broken the chains of sinful habit. They have renounced selfishness. The profane have become reverent, the drunken sober, the profligate pure. Souls that have borne the likeness of Satan have become transformed into the image of God. This change is in itself the miracle of miracles. A change wrought by the Word, it is one of the deepest mysteries of the Word. We cannot understand it; we can only believe, as declared by the Scriptures, it is “Christ in you, the hope of glory.” AA 476.1"
"Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new."
Ellen White directly references 2 Corinthians 5:17 in this passage.
"When the Spirit of God controls mind and heart, the converted soul breaks forth into a new song; for he realizes that in his experience the promise of God has been fulfilled, that his transgression has been forgiven, his sin covered. He has exercised repentance toward God for the violation of the divine law, and faith toward Christ, who died for man's justification. “Being justified by faith,” he has “peace with God through our Lord Jesus Christ.” Romans 5:1 . AA 476.2"
"Therefore being justified by faith, we have peace with God through our Lord Jesus Christ:"
Ellen White directly references Romans 5:1 in this passage.
"Blessed is he whose transgression is forgiven, whose sin is covered."
EGW directly quotes Romans 5:1 and alludes to Psalm 32:1 by mentioning forgiveness of transgression and covering of sin, which are central themes in both passages.
"But because this experience is his, the Christian is not therefore to fold his hands, content with that which has been accomplished for him. He who has determined to enter the spiritual kingdom will find that all the powers and passions of unregenerate nature, backed by the forces of the kingdom of darkness, are arrayed against him. Each day he must renew his consecration, each day do battle with evil. Old habits, hereditary tendencies to wrong, will strive for the mastery, and against these he is to be ever on guard, striving in Christ's strength for victory. AA 476.3"
"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places."
Both passages describe a spiritual battle against evil forces. EGW speaks of the powers of unregenerate nature and the kingdom of darkness arrayed against the Christian, while Ephesians 6:12 describes wrestling against principalities, powers, and spiritual wickedness.