the Lord’s word is sharper than two-edged sword, D&C 6:2 (11:2; 12:2; 14:2; 33:1).
in mouth of two or three witnesses shall every word be established, D&C 6:28.
where two or three are gathered in the Lord’s name, he is there, D&C 6:32.
preach gospel two by two, D&C 42:6 (52:10; 60:8).
two or more elders to lay hands on sick, D&C 42:44.
adulterer to be tried before two elders, D&C 42:80.
two or more witnesses at trial of adulterer, D&C 42:80–81.
bear record two by two, D&C 62:5.
two witnesses are two prophets to be raised up to Jewish nation, D&C 77:15.
two priesthoods, D&C 84:33 (107:1, 6).
two kinds of beings in heaven, D&C 129:1.