George Leo Haydock, on Heb 12:15

“Looking diligently, lest any man be wanting to the grace of God; lest any root of bitterness springing up do hinder, and by it many be defiled.”

“Be wanting to the grace of God, by resisting and abusing his favours, or by falling from the grace of God received. — Lest any root of bitterness, &c. He means scandalous wicked persons, by whom others are infected, defiled, and corrupted. (Witham)”

Imported from an open dataset — not yet checked against the printed edition.