We are all sinners– “Romans 3:23 For all have sinned, and come short of the glory” AND even the best things we do as sinners are like filthy rags in God’s sight–“Isaiah 64: 6 But we are all as an unclean thing, and all our righteousnesses are as filthy rags ; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.”
The righteousness of God is being credited to us through Christ. In fact it is being offered to us as a free gift from God.
Romans 3:21 But now the righteousness of God without the law is manifested, being witnessed by the law and the prophets;
Our salvation is made possible by the redemption that is in Christ.
Rom 3:24 being justified freely by His grace through the redemption that is in Christ Jesus,
Rom 3:25 whom God set forth to be a propitiation by His blood, through faith, to demonstrate His righteousness, because in His forbearance God had passed over the sins that were previously committed,
Rom 3:26 to demonstrate at the present time His righteousness, that He might be just and the justifier of the one who has faith in Jesus.