Let me respond to a few points in your last two letters. 1st thing is, I believe grace to be divine favor, but not only favor, especially when discussing how Christ justifies sinners. The work of Christ is sufficient and efficacious for our salvation. But how is the Savior's work of redemption accomplished upon the cross applied to our souls individually. He has conquered the power of sin and death by his meritorious passion, death, and resurrection.
Grace is divine favor.
He has shown us great favor. But it isn't just a favorable attitude shown to us by God the judge. God is the infinite judge, but even more than that, God is a loving Father. In the OT, God administers the covenant by means of the law and the prophets. In the New Covenant, we have received more than God's Word in the form of His divine commands, but we have received new life in Christ, the power of the Holy Spirit, now receiving the Spirit of sonship, making us children of God.