The Western world we inhabit is dominated by Christian dogma. One particular widespread belief is that sin corrupts us in some fundamental and irredeemable way.
But that’s not how the Torah talks about wrongdoing:
כִּי-יִהְיֶה רִיב בֵּין אֲנָשִׁים, וְנִגְּשׁוּ אֶל-הַמִּשְׁפָּט וּשְׁפָטוּם; וְהִצְדִּיקוּ, אֶת-הַצַּדִּיק, וְהִרְשִׁיעוּ, אֶת-הָרָשָׁע. וְהָיָה אִם-בִּן הַכּוֹת, הָרָשָׁע–וְהִפִּילוֹ הַשֹּׁפֵט וְהִכָּהוּ לְפָנָיו, כְּדֵי רִשְׁעָתוֹ בְּמִסְפָּר אַרְבָּעִים יַכֶּנּוּ, לֹא יֹסִיף: פֶּן-יֹסִיף לְהַכֹּתוֹ עַל-אֵלֶּה מַכָּה רַבָּה, וְנִקְלָה אָחִיךָ לְעֵינֶיךָ – If there is a dispute between men; they shall approach the court, and the judges will judge them, and acquit the innocent one and condemn the guilty one. If the guilty one has incurred lashes, the judge shall make him lean over and flog him in front of him, commensurate with his crime, in number. He shall beat him with forty lashes; he shall not exceed, lest he give him a much more severe flogging than these forty lashes, and your brother will be degraded before your eyes. (25:1-3)
The Torah suggests that the very instant the crime is remediated, the Torah reclassifies the formerly guilty party as your brother – רָשָׁע / אָחִיךָ.
The Sifri derives from here the fundamental principle of rehabilitating offenders. Once a wrongdoer has made amends, he becomes your brother again. So for example, he is permitted to be a witness like anyone else, and his testimony is no less credible. The stain on his character is temporary, not permanent. He is not an ex-convict or Baal Teshuva; he is your brother.
One of the most influential ideas in Judaism, mentioned in the book of Job and popularized by the Baal Shem Tov, is the idea that our souls are a small fragment of godliness, and God as well in some sense – חלק אלוה ממעל. This motif is formidable – not only is God a piece of us, but equally, we are a piece of God.
There is a part of the soul, whatever it may be, that is fundamentally pure and incorruptible – אֱלֹהַי, נְשָׁמָה שֶׁנָּתַתָּ בִּי טְהוֹרָה הִיא.
R’ Jonathan Sacks teaches that Judaism believes in rehabilitation both spiritually and in civil law, to help wrongdoers rebuild and make amends.
When someone sins or stumbles, the Torah condemns the act, not the person. The moment a wrong has been made right, anyone can become your brother, once again.
Hate the sin, not the sinner.