RAV KOOK ON Shemot Part 1: Going To Peace

PLEASE LEARN THIS L"N MY BOBIE ESTHER BAS Yichiel Dovid After agreeing to lead the Israelites out of Egypt, Moses took leave of his father-in-law. Jethro blessed Moses "Go in peace" (Ex. 4:18). Actually, Jethro said "Go to peace." The Talmud (Berachot 64a) picks up on this fine nuance: "One who takes leave from his friend should not say 'Go in peace' ("lech BE-shalom"), but 'Go to peace' ("lech LE-shalom"). Jethro told Moses, 'Go to peace' — Moses went and succeeded in his mission. David told his son Absalom, 'Go in peace' — Absalom went and was hanged." "When taking leave of the deceased, however, one should say, 'Go in peace.'" What is the difference between these two salutations?