They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.
All Commentaries on Mark 16:18 Go To Mark 16
Theophylact of Ochrid
AD 1107
Or else; to every creature, that is, whether believing or unbelieving. It goes on: “He that believeth and is baptized shall be saved.” For it is not enough to believe, for he who believe hand is not baptized, but is a catechumen, has not yet attained to perfect salvation.