R. Moshe Feinstein Against Ecumenical Councils (9 Adar Sheni)

שו"ת אגרות משה יורה דעה ג:מג 9 Adar Bet 5727 (1967)

In 1967, there was an ecumenical conference in New York, and then one planned in Boston. R. Bernard Lander (who later founded Touro) asked about going, and R. Feinstein then contacted R. Soloveitchik about joining a ban.

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