As for one of the sacraments being the sign, let's start with baptism since I see three arguments for it, as opposed to the two for the Lord supper.
5 Lezvi makunu hi zvi tivako ku a ku bhabhatiswa a hi mhaka ya ku hlakana, hi fanele ku tiva a hlamulo wa zviwutiso zvinharu: A Bhibhiliya gi hi gondzisa yini xungetano hi kubhabhatiswa?