(Verse 43) - And fear came - That is, there was great reverence or awe. The multitude had just before derided them (Acts 2:13); but so striking and manifest was the power of God on this occasion, that it silenced all clamors, and produced a general veneration and awe. The effect of a great work of God’s grace is commonly to produce an unusual seriousness and solemnity in a community, even among those who are not converted. It restrains, subdues, and silences opposition.

Every soul - Every person or individual; that is, upon the people generally; not only on those who became Christians, but upon the multitudes who witnessed these things. All things were suited to produce this fear: the recent crucifixion of Jesus of Nazareth; the wonders that attended that event; the events of the day of Pentecost; and the miracles performed by the apostles, were all suited to diffuse solemnity, thought, anxiety through the community.

Many wonders and signs – (See the notes on Acts 2:22). This was promised by the Saviour, Mark 16:17. Some of the miracles which they performed are specified in the following chapters.

(Verse 44) - All that believed - That is, that believed that Jesus was the Messiah; for that was the distinguishing point by which they were known from others.  It is important, if obvious, that we understand that simply believing is not sufficient to save, we must believe rightly.  That rightness is not determined my personal opinion, but by the content of the Word of God, and that alone.

Were together - Were united; were joined in the same thing. It does not mean that they lived in the same house, but they were united in the same community, or engaged in the same thing. They were doubtless often together in the same place for prayer and praise. One of the best means for strengthening the faith of young converts is for them often to meet together for prayer, conversation, and praise.

Had all things common - That is, all their property or possessions. (See Acts 4:32-37; 5:1-10). The apostles, in the time of the Savior, evidently had all their property in common stock, and Judas was made their treasurer. They regarded themselves as one family, having common needs, and there was no use or propriety in their possessing extensive property by themselves. Yet even then it is probable that some of them retained an interest in their property which was not supposed to be necessary to be devoted to the common use. It is evident that John thus possessed property which he retained, (John 19:27). And it is clear that the Savior did not command them to give up their property into a common stock, nor did the apostles enjoin it: (Acts 5:4, “While it remained, was it not thine own? and after it was sold was it not in thine own power?”) It was, therefore, perfectly voluntary, and was as evidently adapted to the special circumstances of the early converts. Many of them came from abroad. They were from Parthia, and Media, and Arabia, and Rome, and Africa, etc. It is probable, also, that they now remained longer in Jerusalem than they had at first proposed; and it is not at all improbable that they would be denied now the usual hospitalities of the Jews, and excluded from their customary kindness, because they had embraced Jesus of Nazareth, who had been just put to death. In these circumstances, it was natural and proper that they should share their property while they remained together.