Acts 1 - Matthew Henry's Concise Commentary on the Bible
The apostles unite in prayer.
God can find hiding-places for his people. They made supplication. All God's people are praying people. It was now a time of trouble and danger with the disciples of Christ; but if any is afflicted, let him pray; that will silence cares and fears. They had now a great work to do, and before they entered upon it, they were earnest in prayer to God for his presence. They were waiting for the descent of the Spirit, and abounded in prayer. Those are in the best frame to receive spiritual
blessings, who are in a praying frame. Christ had promised shortly to send the Holy Ghost; that promise was not to do away prayer, but to quicken and encourage it. A little company united in love, exemplary in their conduct, fervent in prayer, and wisely zealous to promote the cause of Christ, are likely to increase rapidly. (Ac 1:15-26)