So great fear came upon all the church and upon all who heard these things. And through the hands of the apostles many signs and wonders were done among the people. And they were all with one accord in Solomon's Porch. Yet none of the rest dared join them, but the people esteemed them highly.
Acts 5:11-13

Note the words, “through the hands of the Apostles.” God did miracles “through the hands of the Apostles” to validate their words as they preached Christ and the gospel. Let us understand the following:

There are no more Apostles. The apostles were a special group of first century men who ministered with Christ when He was here, and who then ministered in His name afterward. Don’t miss (v.13) that even then, “none of the rest [of the believers] dared join them [the Apostles], but the people esteemed them highly. All believers were not Apostles then, and there are no Apostles now. We do well to be wary of any who call themselves apostles today.
While God can perform miracles to accomplish His own purposes: (1) We dare not presume that miracles are common place (or they would not be miracles!). (2) We dare not think we can cause miracles by our faith (think of how many Jesus healed in the Bible who had no faith or even gratitude!) (3) We dare not think that the people who claim to perform miracles have any such power.

Note also in (v.12) who were in “one accord in Solomon’s Porch.” This is speaking of the Apostles. Though they ended up going in different directions geographically—they were in “one accord” regarding Christ and the gospel. Thank the Lord that though none of us are Apostles, true believers have differences, but we are united in Christ and the Gospel.