Virtue is what is in accordance with God's nature, sin is what is contrary to God's nature, God's law is His instructions for how to live in the image of His nature, and Jesus Christ is the exact image of God's nature (Hebrews 1:3). Our salvation is from sin (Matthew 1:21) and sin is the transgression of God's law (1 John 3:4), so living in obedience to it through faith in Jesus is intrinsically part of the concept of him saving us from not living in obedience to it. In other words, living in the image of God's nature through faith in the one who is the exact image of God's nature is the the content of Hs gift of saving us from not living in the image of God's nature. Alternatively, living virtuously is intrinsically part of the concept of Jesus saving us from not living virtuously.