Titus 3:6 "Which" is the relative pronoun, not "who" the personal pronoun. [See RWP] If "which" it seems to refer to His Mercy which was shed on us; if "who" it may refer to the H.S. which he shed on us. Acts 2:18, Acts 2:33. Generally understood here to refer to the H.S. poured out on us at conversion. Shed .. ASV poured out