Romans 3:25-26

God offered him, so that by his blood he should become the means by which people's sins are forgiven through their faith in him. God did this in order to demonstrate that he is righteous. In the past he was patient and overlooked people's sins; but in the present time he deals with their sins, in order to demonstrate his righteousness. In this way God shows that he himself is righteous and that he puts right everyone who believes in Jesus.