“The only way in which he [the sinner] can attain to righteousness is through faith. By faith he can bring to God the merits of Christ, and the Lord places the obedience of His Son to the sinner’s account. Christ’s righteousness is accepted in place of man’s failure, and God receives, pardons, justifies, the repentant, believing soul, treats him as though he were righteous, and loves him as He loves His Son.
This is how faith is accounted righteousness.” — Ellen G. White, Selected Messages, book 1, p. 367.
“When through repentance and faith we accept Christ as our Savior, the Lord pardons our sins, and remits the penalty prescribed for the transgression of the law. The sinner then stands before God as a just person; he is taken into favor with Heaven and through the Spirit has fellowship with the Father and the Son.
Then there is yet another work to be accomplished, and this is of a progressive nature. The soul is to be sanctified through the truth. And this also is accomplished through faith. For it is only by the grace of Christ, which we receive through faith, that the character can be transformed.” — Ellen G. White, Selected Messages, book 3, p. 191.
Old Covenant, new covenant: Jesus paid the debt owed by the law, so that we can stand righteous in the sight of God.