Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
Then Peter said unto them, Repent. For the meaning of this word, see the note at Matthew 3:2. Here it certainly includes the reception of the Gospel, as the proper issue of that inner revolution which they were then undergoing.
And be baptized every one of you. There is something nobly expansive and exhaustive in this invitation, to everyone of that vast audience, henceforth to regard Him whom they had so recently put to death in quite a new light, and, with grief for that dreadful act, to enroll themselves among His declared and devoted disciples.
In the name of Jesus Christ for the remission of sins - baptism being the visible seal of that remission.
And ye shall receive the gift of the Holy Spirit - the gift of the indwelling Spirit, of which tongues and other supernatural gifts were but the external attestations.