Does B’rit Hadasha practice water baptism and the Lord’s Supper?
Yes. Immersion in water is practiced as a sign of one’s beginning a new life of devotion to Messiah, and the Lord’s Supper is observed periodically usually in context of a meal when possible. Water Baptism (t’villah) has its roots in the Jewish rite of the “mikveh” (ceremonial washing) and the Lord’s Supper (shulchan Adonai) has its roots in the Jewish rite of Passover.
