For the text of this Bible passage, please see the previous post.
All men are known by their works
The Lord warns us that we must measure the worth of fair words and seeming meekness by the fruit of works. That is, we should look not so much to what a man says of himself, as to what he does; for there are many who hide the ravening of a wolf under sheep’s clothing.
As, then, thorns do not bear grapes, nor do thistles produce figs, and evil trees do not bring forth good fruits, so, the Lord teaches, neither do evil men bring forth good works. Therefore, all men are to be known by their works. Words alone will not win the kingdom of heaven, nor will he ever inherit it who says only: “Lord, Lord.”
– St Hilary, Bishop, Commentary on Matthew, can. 6, from: An Approved Translation of the Breviarium Romanum, Burns & Oates, London, 1964 (bold emphasis added)