Luke 7:6

Which certainly He did not do, because He was unable to heal when absent, but that He might set them an example of imitating His humility. He would not go to the son of the nobleman, lest He should seem thereby to have respected his riches; He went immediately here, that He might not seem to have despised the low estate of a centurion's servant. But the centurion laying aside his military pride puts on humility, being both willing to believe and eager to honour; as it follows, And when he was not far off, he sent unto him, saying, Trouble not, thyself: for I am not worthy, &c. For by the power not of man, but of God, he supposed that health was given to man. The Jews indeed alleged his worthiness; but he confessed himself unworthy not only of the benefit, but even of receiving the Lord under his roof, For I am not worthy that thou shouldest enter under my roof.

But the centurion wished not to trouble Jesus, for Whom the Jewish people crucified, the Gentiles desire to keep inviolate from injury, and (as touching a mystery) he saw that Christ was not yet able to pierce the hearts of the Gentiles.

(ubi sup.) For as soon as he was freed from the annoyance of the Jews, he then sends, saying, Think not that it was from negligence I came not unto Thee, but I counted myself unworthy to receive Thee in my house.

But the centurion, whose faith is preferred to Israel, represents the elect from the Gentiles, who as it were attended by their hundred soldiers, are exalted by their perfection of spiritual virtues. For the number hundred, which is transferred from the left to the righta, is frequently put to signify the celestial life. These then must pray to the Lord for those who are still oppressed with fear, in the spirit of bondage. But we of the Gentiles who believe can not ourselves come to the Lord, whom we are unable to see in the flesh, but ought to approach by faith; we must send the elders of the Jews, that is, we must by our suppliant entreaties gain as patrons the greatest men of the Church, who have gone before us to the Lord, who bearing us witness that we have a care to build up the Church, may intercede for our sins. It is well said that Jesus was not far from the house, for his salvation is nigh unto them that fear him, and he who rightly uses the law of nature, in that he does the things which he knows to be good, approaches nigh unto Him who is good.

And the elders of the Jews indeed demand favours for a small sum spent in the service of the synagogue, but the Lord not for this, but a higher reason, manifested Himself, wishing in truth to beget a belief in all men by His own power, as it follows, Then Jesus went with them.