4:31 {11} 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.
(11) God witnesses to his Church by a visible sign that it is he that will establish it, by shaking the powers both of heaven and of earth.
4:31 The place was shaken. As a sensible evidence that their prayer was granted, and then
they were all filled with the Holy Ghost, as on Pentecost, so inspired that all fear was shaken off.
4:31 They were all filled - Afresh; and spake the word with boldness - So their petition was granted.
4:23-31 Christ's followers do best in company, provided it is their own company. It encourages God's servants, both in doing work, and suffering work, that they serve the God who made all things, and therefore has the disposal of all events; and the Scriptures must be fulfilled. Jesus was anointed to be a Saviour, therefore it was determined he should be a sacrifice, to make atonement for sin. But sin is not the less evil for God's bringing good out of it. In threatening times, our care should not be so much that troubles may be prevented, as that we may go on with cheerfulness and courage in our work and duty. They do not pray, Lord let us go away from our work, now that it is become dangerous, but, Lord, give us thy grace to go on stedfastly in our work, and not to fear the face of man. Those who desire Divine aid and encouragement, may depend upon having them, and they ought to go forth, and go on, in the strength of the Lord God. God gave a sign of acceptance of their prayers. The place was shaken, that their faith might be established and unshaken. God gave them greater degrees of his Spirit; and they were all filled with the Holy Ghost, more than ever; by which they were not only encouraged, but enabled to speak the word of God with boldness. When they find the Lord God help them by his Spirit, they know they shall not be confounded, Isa 1.7.