John Chrysostom

"For they were overthrown," saith he, "in the wilderness." Declaring by this word both the sweeping destruction, and the punishments and the vengeance inflicted by God, and that they did not so much as attain to the rewards proposed to them. Neither were they in the land of promise when He did these things unto them, but without and afar somewhere, and wide of that country; He thus visiting them with a double vengeance, both by not permitting them to see the land, and this too though promised unto them, and also by actual severe …

Homily on 1 Corinthians 23 ↗

Theophylact of Ohrid

Although God showed them many signs of love and deemed them worthy of very many blessings, nevertheless in the majority of them He did not find what was pleasing to Himself, "was not well pleased." For not all were rejected, but many. By the words "not with many" he expresses the thought that their great number was of no benefit to them whatsoever, when for their part they did not show deeds of love toward their Benefactor. By the words "were struck down" he indicates their sudden destruction and the punishments sent from God.

Commentary on 1 Corinthians ↗

Irenaeus

Still further did He also make it manifest, that we ought, after our calling, to be also adorned with works of righteousness, so that the Spirit of God may rest upon us; for this is the wedding garment, of which also the apostle speaks, "Not for that we would be unclothed, but clothed upon, that mortality might be swallowed up by immortality." But those who have indeed been called to God's supper, yet have not received the Holy Spirit, because of their wicked conduct "shall be," He declares, "cast into outer darkness." He thus …

Against Heresies Book IV ↗