Luke 6:12

Let not thy ears be open to deceit, that thou shouldest think that the Son of God prays from want of strength, that He may obtain what He could not perform; for being Himself the Author of power, the Master of obedience, He leads us by His own example to the precepts of virtue. Every where also He prays alone, for human wishes comprehend not the wisdom of God; and no one can be a partaker of the secrets of Christ. But not every one who prays ascends a mountain, he only who prays advancing from earthly things to higher, who is not anxious for the riches or honours of the world. All whose minds are raised above the world ascend the mountain. In the Gospel therefore you will find, that the disciples alone ascend the mountain with the Lord. But thou, O Christian, hast now the character given, the form prescribed which thou shouldest imitate; as it follows, And he continued all night in prayer to God. For what oughtest thou to do for thy salvation, when Christ continues all night in prayer for thee?

(Hom. ad Pop. Ant. 42. et in Act. c. 16. Ed. Lat.) Rise then thou also at night time. The soul is then purer, the very darkness and great silence are in themselves enough to lead us to sorrow for our sins. But if thou lookest upon the heaven itself studded with stars as with unnumbered eyes, if thou thinkest that they who wanton and do unjustly in day time are then nothing different from the dead, thou wilt loathe all human undertakings. All these things serve to raise the mind. Vain-glory then disquiets not, no tumult of passion has the mastery; fire does not so destroy the rust of iron as nightly prayer the blight of sin. He whom the heat of the sun has fevered by day is refreshed by the dew; nightly tears are better than any dew, and are proof against desire and fear. But if a man is not cherished by the dew we speak of, he withers in the day. Wherefore although thou prayest not much at night, pray once with watching, and it is enough; show that the night belongs not only to the body, but to the soul.

Let us examine then in the actions which Jesus did, how He teaches us to be instant in prayer to God, going apart by ourselves, and in secret, no one seeing us; putting aside also our worldly cares, that the mind may be raised up to the height of divine contemplation; and this we have marked in the fact, that Jesus went in to a mountain apart to pray.

But in a mystical sense the mountain on which our Lord chose His disciples represents the loftiness of justice in which they were to be instructed, and which they were to preach to others; so also the law was given on a mountain.

(non occ.) When adversaries rose up against the miracles and teaching of Christ, He chose Apostles as defenders and witnesses of the truth, and prefaces their election with prayer; as it is said, And it came to pass, &c.