Acts 2:42

And they continued stedfastly in the apostles" doctrine i.e. They allowed nothing to interfere with the further teaching which the Apostles no doubt gave to the newly baptized. The converts would naturally seek to hear all the particulars of the life of Him whom they had accepted as Lord and Christ, and such narratives would form the greatest part of the teaching of the Apostles at the first.

and fellowship That communion, or holding all things common, of which a more full description is given in the following verses, and which would bind them most closely into one society.

breaking of bread The earliest title of the Holy Communion and that by which it is mostly spoken of in Scripture. (See Acts 20:7; 1 Corinthians 10:16, &c.) In consequence of the omission here and elsewhere of any mention of the wine, an argument has been drawn for communion in one kind. But it is clear from the way in which St Paul speaks of the bread and the cup in the same breath, as it were, that such a putting asunder of the two parts of the Sacrament which Christ united is unwarranted by the practice of the Church of the Apostles.

and in prayers The Greek has the article here, and stress has sometimes been laid on this, as though the Church at this early date had some settled form of prayer. But it is enough to refer to Acts 1:14, where the article is also found, but which few would wish to construe "they continued stedfastly in theprayer."