Notice the importance of prayer in the advance of the Gospel. They were looking for a prayer meeting when Lydia was saved (Acts 16:13-14). They were going to a prayer meeting when the girl was saved (Acts 16:16-18). They were having a prayer meeting when the jailer was saved (Acts 16:25-34). They had gone to Philippi ‘to preach the Gospel to them’(Acts 16:10). Even when they were ‘in chains’, the Gospel proved itself to be ‘the power of God for salvation to everyone who has faith’(Ephesians 6:20; Romans 1:16). ‘The Word of God is not bound’. It is ‘living and active’. ‘Sharper than any two-edged sword’, it is ‘the sword of the Spirit’(2 Timothy 2:9; Hebrews 4:12; Ephesians 6:17). Do you want people to ask the Salvation question and heed the Gospel answer (Acts 16:30-31)? ‘Pray at all times in the Spirit… with all perseverance’(Ephesians 6:18).