Sources: Talmud Bavli Sotah 14a; Shabbat 133b; Sifre Deuteronomy on 11:22; Deuteronomy 13:5; 28:9; Leviticus 19:2 (‘You shall be holy, for I the LORD your God am holy’); Maimonides, Laws of Ethical Qualities 1:5–7.

Imitatio Dei — the obligation to imitate God’s attributes — is one of the central organizing principles of rabbinic ethics. Sotah 14a asks: how can a human being ‘walk after the LORD your God’ (Deut 13:5) — is it not impossible to walk after the Shekhinah, which is a consuming fire? The answer: walk after God’s attributes. As God clothed the naked (Adam and Eve in the garden), so you clothe the naked. As God visited the sick (Abraham after his circumcision), so you visit the sick. As God comforted mourners (Isaac after Abraham’s death), so you comfort mourners. As God buried the dead (Moses at Moab), so you bury the dead. Shabbat 133b expresses the same through the verse ‘This is my God and I will glorify Him’ (Exod 15:2) — be like Him: as He is gracious and compassionate, be you gracious and compassionate. Leviticus 19:2’s ‘be holy as I am holy’ becomes not an impossible demand for divine perfection but a specific program of ethical action. Maimonides (Laws of Ethical Qualities 1:6) makes this a formal commandment: it is commanded that one walk in the middle paths, which are the good and upright ways — and these middle paths are called the ‘ways of God.’ The doctrine bridges the gap between Jewish law (halakha as specific obligation) and Jewish ethics (the character of the person performing the obligations) — making character formation, not just behavioral compliance, a religious requirement.