Reply To: Why do we CELEBRATE Lag Be'Omer? Home › Forums › Yom Tov › Sefira › Why do we CELEBRATE Lag Be'Omer? › Reply To: Why do we CELEBRATE Lag Be'Omer? May 17, 2012 3:28 pm at 3:28 pm #875002 HaLeiViParticipant Sure Yitay, he was probably against getting the Semicha he got because it was against the rules of the ‘Great Romans’.