God's justice is satisfied because of His grace provision of redemption. The Lord Jesus Christ, through his substitutionary, effective death on the Cross, transferred the guilt of the sinner onto Himself, thus satisfying the justice of God. God is now free to pardon the sinner and justify the one who accepts His saving grace. God is equally free to justly condemn all who reject salvation. The basis of their indictment is works, never sins.
Grace always precedes judgment.
LOVE God is eternal and unchangeable love. God, in His sovereignty, decided to treat man in grace. It is His love that motivates His grace. Righteousness and Justice stood in the way because of the sin barrier between man and God. In Love, God the Father sent His Son to the cross to die for the sins of the whole world.