be baptized with
(or, in) the Holy Spirit (Acts 1:5, 8). McGarvey comments: “Here the same gift of the Spirit previously promised is
called a baptism in the Spirit—a figure which designates the subsidence of their own mental
powers in those of the Holy Spirit when he should come upon them; and he assures them that they should
then receive power, and be his witnesses in every land. The power necessary to be such
witnesses, as we learn from the sequel, is both the power to work physical miracles and the power to speak with
absolute knowledge concerning the exaltation of Jesus, and concerning his will in all things on
which he had not spoken in person” (p. 175).