Acts 4:24 And when they heard that, they lifted up their voice to God with ONE ACCORD, and said, Lord, thou art God, which hast made heaven, and earth, and the sea, and all that in them is …. 29 And now, Lord, behold their threatenings: and grant unto thy servants, that with all boldness they may speak thy word, 30 By stretching forth thine hand to heal; and that signs and wonders may be done by the name of thy holy child Jesus. 31 And WHEN THEY HAD PRAYED, the place was shaken where they were assembled together; and they were all filled with the Holy Ghost, and they spake the word of God with boldness… 33 And with GREAT POWER gave the apostles witness of the resurrection of the Lord Jesus: and GREAT GRACE was upon them all.
Where unity is there is power. More can be accomplished in thirty seconds of unity than thirty years in disunity. That is what the Early Church had in powerful demonstration, moving together as one. Whenever God begins to do a good thing, the devil and forces of darkness rise in animosity to oppose and hinder it. Our enemy brings natural threats because he’s being threatened spiritually. These occurrences are more than coincidental, circumstantial or accidental. In Acts chapter four, we see opposition rising up against the preaching and teaching of the Word and use of the Name of Jesus. Their response was they brought it to the Body and united in prayer (Ac. 4:23 33).
It’s interesting that v. 23 says “… They went to their “own” company (one’s own; belonging to; one’s own companions….” Their coming together is as important as their prayer. They had a place they could call their own. It shows they had a home church they were submitted and committed to. It is nice to have people who, “have your back,” or will be your “backup” when you need it. In v. 24 it says, “They lifted up their voice to God,” it wasn’t silent prayer but prayed aloud as a group (Lifted Greek, airo to lift up, pick up, take up lit. to raise one’s voice).
I believe the key to their prayer was that they were in unity or one accord. One accord comes from a word defined as “together; likeness; sameness; oneness; with one mind, purpose, impulse.” There was a community of passion. This word “one accord,” appears eleven times in the NT, ten of them are in the book of Acts, and six times specifically related to times when and where they assembled together. The account of this prayer in one accord in Acts 4:24-33 could very possibly be 8,120 believers flowing together in unity and oneness (120 on the day of Pentecost Acts 1:14; 3000 saved after Peter preached Acts 2:41; and 5000 the very next day Acts 4:4).
It appears that the whole prayer lasted less than 60 seconds; it was prayed in their own language not the prayer language of other tongues. The key wasn’t the loudness, the length, or the language but rather their unity/ one accord/their ONENESS. You’d think God would shake the place where those who were threatening them were but He shook the place where the prayer was made. Notice the mighty display of power in v. 43, “And with great power gave the apostles witness of the resurrection of the Lord Jesus: and great grace was upon them all.”