In prayer to God.— 'Εν τη προσευχη του Θεου, in a proseucha, oratory, or prayer-house of God. These proseuchas, or houses of prayer, were common in Judea: it is well known that they were open at the top, planted round with trees, and often situated by the sides of seas or rivers. See Acts 16:13. Joshua 20:26 and Calmet on the word proseuche. Dr. Heylin is of opinion, that the phrase is emphatical, to import an extraordinary and sublime devotion:—In the prayer of God. So the high mountains, and tall cedars, in the scripture, are called the mountains of God, and the cedars of God. Jesus was to appoint his disciples the following day.
Related Commentaries of Luke 6:12
Luke 6:12
12 And it came to pass in those days, that he went out into a mountain to pray, and continued all night in prayer to God.