Albert Barnes on Acts 2:43

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 clamours, 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 convicted. 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 fitted 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 fitted to diffuse solemnity, and thought, and anxiety through the community.

Many wonders and signs. Acts 2:22. This was promised by the Saviour Mk 16:17. Some of the miracles which they wrought are specified in the following chapters.

(a) "many wonders and signs" Mk 16:17