Luke 5:16

And he withdrew himself into the wilderness - Or rather, He frequently withdrew into the desert. This I believe to be the import of the original words, ην ὑποχωρων. He made it a frequent custom to withdraw from the multitudes for a time, and pray, teaching hereby the ministers of the Gospel that they are to receive fresh supplies of light and power from God by prayer, that they may be the more successful in their work; and that they ought to seek frequent opportunities of being in private with God and their books. A man can give nothing unless he first receive it; and no man can be successful in the ministry who does not constantly depend upon God, for the excellence of the power is all from him. Why is there so much preaching, and so little good done? Is it not because the preachers mix too much with the world, keep too long in the crowd, and are so seldom in private with God? Reader! Art thou a herald for the Lord of hosts? Make full proof of thy ministry! Let it never be said of thee, "He forsook all to follow Christ, and to preach his Gospel, but there was little or no fruit of his labor; for he ceased to be a man of prayer, and got into the spirit of the world." Alas! alas! is this luminous star, that was once held in the right hand of Jesus, fallen from the firmament of heaven, down to the Earth!

5:16 He withdrew - The expression in the original implies, that he did so frequently.