(Heb 1:14) “Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?” When a person is saved, they are indwelt, sealed, with the Spirit of God (Eph 1:13-14). He, God the Spirit, is our protector. Personal supposition: Knowing who will be saved, an angel is assigned to watch over us until born an “heir of salvation”, so the text reads “…for them who SHALL BE heirs of salvation.”