It is the Messiah’s mighty arm which will vindicate God’s people. We place our hope, trust, and full confidence in His nail scared but resurrected arms, feet, and side.
The righteous dead in Christ have already passed through the judgment at Calvary where our sentence was pardoned on account of Christ’s shed blood and resurrection.
The best way to get at the Gospel in our Amos reading is to connect it to Christ. It is too easy and tempting to associate it with social justice today. Our people will not need much encouragement to go there. What they need is the surprising and salvific connection to Christ
Jesus' active obedience is what saves you from your active sinning. He took your sin to the cross and that one act of obedience is what led to your justification by grace through faith on account of His glorious resurrection.
He is a God who changes curses into blessings. We see that clearest in Jesus, whose life, ministry, atoning death, and glorious resurrection is the Way, the Truth, and the Life.