From A Hunger for God by John Piper, p. 99
This fasting in Acts 13 proved to be an occasion for the Spirit’s special guidance. Verses 2 and 3 say, “While they were worshiping the Lord and fasting, the Holy Spirit said, ‘Set apart for Me Barnabas and Saul for the work to which I have called them.’ Then after fasting and praying they laid their hands on them and sent them off.” In reporting it this way, Luke clearly wants us to see a connection between the worship, prayer, and fasting on the one hand and the decisive guidance of the Holy Spirit on the other: “While they were… fasting, the Holy Spirit said…” This is a significant biblical precedent for engaging in worship-fasting-prayer in the earnest pursuit of God’s will for our lives and the life of our church.
βιβλιοσκώληξ 