Four quotes:

Tertullian (c. 155-230): God will “impute righteousness to those who believe in him, and make the just live through him, and declare the Gentiles to be his children through faith.”

Basil of Caesarea (330-379): “The is perfect and pure boasting in God, when one is not proud on account of his own righteousness but knows that he is indeed unworthy of the true righteousness and is justified soley by faith in Christ.”

Marius Victorinus: “We know that a man is not justified by the works of the law but through faith and the faith of Jesus Christ… It is faith alone that gives justification and sanctification.”

John Chrysostom (c. 347-407): God’s grace “has allowed Him that did no wrong to be punished for those who had done wrong… Him that was righteousness itself, ‘He made sin,’ that is allowed Him to be condemned as a sinner, as one cursed to die, so that we might be, not just ‘righteous’ but ‘righteousness,’ indeed the righteousness of God.”