Acts 10:48

And he commanded them to be baptized Peter seems to have refrained from baptizing converts, and we know that St Paul did so, and the latter indicates a reason which may have influenced all the twelve to appoint others to baptize, lest factions should arise, and men sever the Christian unity by calling themselves by the name of some one of the Apostles. Cp. 1 Corinthians 1:13-16.

in the name of the Lord The oldest MSS. have "in the name of Jesus Christ."

Then prayed they him to tarry certain days It is probable that Peter consented to stay (see Acts 11:3), and thus shewed that he was prepared to act according to the teaching of the vision. We know that afterwards (Galatians 2:11-13) he wavered in his determination, and was rebuked by St Paul for so doing; but even the account of that rebuke shews us that Peter had laid aside his Jewish prejudices in a great degree, and had only acted, in the way which was blamed, through the influence of some still strict Jews who had come from Jerusalem to Antioch. St Luke is not to be supposed to be ignorant of that wavering action of St Peter because he does not mention it. For a similar Christian reticence, in a like case, see Acts 13:13 and note there.