Now it happened, when all the people were baptized, Jesus also had been baptized, and was praying. The sky was opened,
"In Luke-Acts times of prayer and worship are frequently the occasions for divine revelations to characters in the story. This is true of Zechariah (Luke 1:9-11), Anna (Luke 2:37-38), Cornelius (Acts 10:2-6), Peter (Acts 10:9-16), Paul (Acts 9:11-12; Acts 22:17-21), and the prophets and teachers of the church in Antioch (Acts 13:2). This is true also of Jesus. Jesus’ choice of the twelve is preceded by prayer, indeed, prayer through the whole night (dif. Matthew, Mark), in which Jesus is evidently seeking divine guidance for the choice (Acts 6:12). The transfiguration also takes place while Jesus is praying (dif. Matthew, Mark). . . . In Luke 22:40-46 also, if Luke 22:43-44 are an original part of the text, Jesus prays concerning his mission and receives a response through a vision of a strengthening angel." [Note: Tannehill, 1:56-57.] 