John Chrysostom

And Christ again, in answering this apostle, said not, "If any man raise up the lame," but, "Whosoever hath forsaken houses or lands, shall receive an hundredfold in this world, and shall inherit everlasting life." Let us also then emulate this man, that we may not be confounded, but may with confidence stand at the judgment seat of Christ; that we may win Him to be with us, even as He was with His disciples. …

Homily on the Gospel of Matthew 90 ↗

Theophylact of Ohrid

And every one that hath forsaken houses, or brethren or sisters, or father, or mother, or wife, or children, or lands, for My name's sake, shall receive a hundredfold, and shall inherit everlasting life. So that no one would think that what was said applied only to the disciples, Christ broadened the promise to include everyone who does likewise. …

Commentary on Matthew ↗

Augustine of Hippo

That He says, An hundred fold, is explained by the Apostle, when he says, As having nothing, and yet possessing all things. (2 Cor. 6:10.) For a hundred is sometimes put for the whole universe.

Catena Aurea by Aquinas ↗

Jerome

And everyone who has left houses, or brothers, or sisters, or father, or mother, or wife, or children, or fields for my name's sake, shall receive a hundredfold, and shall possess eternal life. But many who are first shall be last, and the last first. This passage is in agreement with that saying in which the Savior speaks: 'I came not to send peace, but a sword. …

Commentary on Matthew ↗

Hilary of Poitiers

They followed him in the washing of baptism, the sanctification of the faith, in the adoption of the inheritance and in the resurrection from the dead. For this is that regeneration that the apostles received and that the law could not grant. It joined them together above the twelve thrones, judging the twelve tribes of Israel, to the glory of the twelve patriarchs. To others following him in scorn of the secular world, he promises the abundance of hundredfold harvests. …

Commentary on Matthew 20.4 ↗