“Now, Lord, look on their threats, and grant to Your servants that with all boldness they may speak Your word, by stretching out Your hand to heal, and that signs and wonders may be done through the name of Your holy Servant Jesus."
Acts 4:29-30

Peter and James, along with the church, were comforted regarding the persecution they encountered because (a) God is sovereign, (b) God ordained the death of Jesus at the hands of persecutors, and (c) Jesus said as the world hated Him, it will likewise hate us.

They then prayed the following:

Lord, look on their threats. They entrusted justice and vengeance to the Lord. May we love the lost and leave final judgment to God!

Grant to Your servants that with all boldness they may speak Your word. They wanted to proclaim Christ and the gospel. They knew that in the face of persecution it would be difficult, so they petitioned the Lord for holy boldness. We are weak and frail, and like Peter while Jesus was on trial, we can easily succumb to the fear man and deny the Lord. We must not trust in our strength (as though we had any!), but solely in His. And let us speak His Word since there is power in His Word (Hebrews 4:12), and the gospel (Romans 1:16). There is no power in our words.

And that signs and wonders may be done through the name of Your holy Servant Jesus. God worked miracles through the Apostles (Acts 2:43, 5:12, 2 Corinthians 12:12), but there is no promise that He would do those same kinds of miracles by the hands of every ordinary believer. The one miracle that we do get to play a part in, however, is the miracle of salvation. As we are bold to proclaim the gospel, though many or even most will not respond—the elect of the Lord will respond! So let us faithfully and boldly speak the name of Jesus and trust that as His Word is declared, we shall witness the miracle of salvation.