From that day when man disobeyed the divine mandate, from that moment when man knew sin, all men after the first (Adam) were dragged by sin and we are still dragged by it. This means that before we were perfect beings in the likeness of God, but now we have become beings full of imperfections.
From Adam who was the first man to the last human being has sinned, since there is no perfect human being, including those great men of the Bible, those we admire and respect, but, the truth is that they once also committed errors like us and in one way or another this can encourage us, in the sense that our imperfections can not go higher than the plan of redemption of Christ for humanity. His eternal love, His inexhaustible mercy has reached us, not because we are good or deserving of His love, but because He decided to love us and that explains everything.
Do you think there was a perfect man in the Bible? For that question is easily answered through the Scriptures themselves: