Hechos 2:41

Peter had called on his audience to repent and to be baptized (Acts 2:38). Luke recorded the response of the believers. This reference, too, is probably to water baptism.

More people may have become Christians on this one day than did so during the whole earthly ministry of our Lord Jesus Christ (cf. John 14:12). Luke evidently meant that 3,000 were added to the 120 mentioned in Acts 1:15 since he was describing the visible relationships of the believers. [Note: Kent, p. 34, footnote 14.]

Some interpreters believe that this verse does not describe what took place immediately following the conclusion of Peter’s sermon, however. Luke may have been summing up the results of Peter’s preaching as a new point of departure in his narrative. He often used the Greek word translated "then" (men) in Acts to do this. Furthermore "day" (hemera) can refer to a longer time as well as to one 24-hour period. Here it could refer to the first period in the church’s life. [Note: Rackham, pp. 31-32; Neil, p. 80.]

The period between the death of Christ and the destruction of Jerusalem in A.D. 70 was a transitional period. The tearing of the temple veil when Jesus died (Matthew 27:51) symbolized the termination of the old Mosaic order and the beginning of a new order. The new order began when Jesus Christ died. However it took several decades for God’s people to make the transition in their thinking and practice. The Book of Acts documents many of those transitions.

"The transition was extensive. Ethnically, there was a transition from dealing primarily with Jews to dealing with both Jew and Gentile without distinction. There was also a transition in the people with whom God was dealing, from Israel to the church. Likewise, there was a transition in the principle on which God was dealing with men, from Law to grace. There was a transition from the offer to Israel of an earthly Davidic kingdom to the offer to all men of salvation based on the death and resurrection of Jesus Christ. There was a transition from the prospect of Messiah’s coming to the historical fact that the promised One had come. There was a transition from the promise that the Spirit would be given to the historical fact that the Spirit had come.

"Again, all these transitions were made positionally in the brief period of time from the death of Christ to the Day of Pentecost. Yet experientially these truths were understood and entered into only over a span of some four decades. The Book of Acts records the positional transition as well as the experiential transition in the development of the theocratic kingdom program." [Note: Pentecost, Thy Kingdom . . ., pp. 266-67.]

". . . the Book of the Acts is particularly valuable as giving to us the earliest models of several ordinances and institutions which have since become part of the life of the Christian Church. These first occasions should be studied as types and models of what all subsequent occasions should be.

"The first descent of the Spirit (chap. 2); the first Christian preaching (chap. 2); the first Christian Church (chap. 2); the first opposition to Christianity (chap. 4); the first persecution (chap. 4); the first prayer meeting (chap. 4); the first sin in the Church (chap. 5); the first Church problem (chap. 6); the first martyr (chap. 7); the first Church extension (chap. 8); the first personal dealing (chap. 8); the first Gentile Church (chap. 11); the first Church Council (chap. 11).

"The first missionary (chap. 13); the first missionary methods (chaps. 13, 14); the first Church contention (chap. 15); the first Church in Europe (chap. 16); the first address to Christian ministers (chap. 20)." [Note: Thomas, pp. 86-87.]

This list could be developed even further.

". . . what Acts aims to do is to give us a series of typical exploits and adventures of the great heroic figures of the early Church." [Note: Barclay, p. xiii.]