SCRIPTURE COMMENTARY #197
"Every one therefore that heareth these my words, and doth them, shall be likened to a wise man that built his house upon a rock, And the rain fell, and the floods came, and the winds blew, and they beat upon that house, and it fell not, for it was founded on a rock." (Matt. 7:24-25)
THE ROCK OF FAITH: The magnificent concluding words of the Sermon on the Mount mean this: He who has a living faith in Jesus Christ stands firmly on a rock. He does not totter in time of danger, being assured that, by reason of his aim in life and his good works, his soul is safe. The rock, therefore, which resists all trials and temptations, even the terrors of death and the judgment, is a living faith in Jesus Christ.
[From 'A Practical Commentary on Holy Scripture' by Bishop Knecht, D.D.] (1899 Douay-Rheims Bible)