Luke 1:80

Or he increased in spirit, remaining not in the same measure in which he had begun, but the Spirit was ever growing in him. His will ever tending to better things, was making its own advances, and his mind ever contemplating something more divine, while his memory was exercising itself, that it might lay up more and more things in its treasury, and more firmly retain them. But he adds, And he waxed strong. For human nature is weak, as we learn, the flesh is weak. (Matt. 26:41.) It must therefore be made strong by the Spirit, for the Spirit is ready. Many wax strong in the flesh, but the wrestler of God must be strengthened by the Spirit that he may crush the wisdom of the flesh. He retires therefore to escape the noise of cities, and the thronging of the people. For it follows, And he was in the deserts. Where the air is purer, the sky more clear, and God a closer friend, that as the time had not yet arrived for his baptism and preaching, he might have leisure for praying, and might hold converse with the angels, calling upon God and fearing Him, saying, Behold, here am I.

Mark also, in how few words Elisabeth prophesies, in how many Zacharias, and yet each spoke filled with the Holy Spirit; but this discipline is preserved, that women may study rather to learn what are the Divine commands than to teach them. And rightly is the time noted during which the prophet was in the womb, in order that the presence of Mary might not be passed over, while they are silent about the time of his childhood, because being strengthened in the womb by the presence of the Mother of the Lord, he knew not the struggles of childhood.

The future preacher of repentance, that he might the more boldly reclaim his hearers from the allurements of the world, passes the first part of his life in the deserts. Hence it is said, And the child grew.

i. e. in bodily stature, and waxed strong in spirit, for together with his body at the same time his spiritual gift increased, and the workings of the Spirit were more and more manifested in him. Or, he was in the deserts that he might be brought up beyond the reach of the malice of the multitude, and not be afraid of man. For if he had been in the world, perchance he had been corrupted by the friendship and conversation of the world. And secondly, that he who was to preach Christ might also be esteemed trust-worthy. But he was hid in the desert until it pleased God to show him forth to the people of Israel, as it follows, till the day of his showing forth to Israel.