And every one that heareth - and doeth them not - Was there ever a stricter system of morality delivered by God to man, than in this sermon? He who reads or hears it, and does not look to God to conform his soul and life to it, and notwithstanding is hoping to enter into the kingdom of heaven, is like the fool who built his house on the sand. When the rain, the rivers, and the winds come, his building must fall, and his soul be crushed into the nethermost pit by its ruins. Talking about Christ, his righteousness, merits, and atonement, while the person is not conformed to his word and spirit, is no other than solemn self-deception.
Let it be observed, that it is not the man who hears or believes these sayings of Christ, whose building shall stand, when the earth and its works are burnt up; but the man who Does them.
Many suppose that the law of Moses is abolished, merely because it is too strict, and impossible to be observed; and that the Gospel was brought in to liberate us from its obligations; but let all such know, that in the whole of the old covenant nothing can be found so exceedingly strict and holy as this sermon, which Christ lays down as the rule by which we are to walk. "Then, the fulfilling of these precepts is the purchase of glory." No, it is the Way only to that glory which has already been purchased by the blood of the Lamb. To him that believes, all things are possible.

And everyone that heareth these sayings of mine,.... Who only externally hears them, but has no understanding of them; do not believe them, nor like and approve of them, but hates and despises them; or if not, depends upon his external hearing of them, and contents himself with a speculative knowledge, without the practice of them,
and doth them not; does not yield the obedience of faith to the doctrines of the Gospel, nor submits to the ordinances of it, but neglects them, and all other duties of religion: or if he does obey, it is only outwardly, not from the heart; nor from a principle of love; nor in faith; nor in the name and strength of Christ; nor for the glory of God, but in order to obtain life for himself: such
shall be likened unto a foolish man, which built his house upon the sand; or, as Luke has it, "without a foundation upon the earth"; upon the surface of the earth, without digging into it for a foundation: and such may be said to build
without a foundation, who pretend to make their peace with God by their own works; who hope for pardon on the foot of the mercy of God, and their own repentance; seek for justification by their own, and not the righteousness of Christ; look for acceptance with God, for the sake of their own worthiness; and who expect salvation in any other way than by Christ: as in each of these articles, they leave out Christ, they may be said to build without a foundation indeed, and to build "upon" the surface of "the earth"; as they do, who build their hope of salvation upon anything that is merely external; as, their riches and grandeur, their wisdom and learning, their natural descent, and religious education, their civility, courteousness, and what is called good nature, their liberality and alms deeds, their morality, common justice and honesty, their legal righteousness, whether moral or ritual, and a round of religious duties; and such may be said to "build upon the sand", on that which will bear no weight, but gives way, and sinks. The salvation of the soul is a weighty thing; and that which is like sand, as is everything of a man's own, can never support it: God has therefore laid the salvation of his people on his own Son; and he must be a "foolish man" that builds on anything short of him.

And every one that heareth these sayings of mine--in the attitude of discipleship.
and doeth them not, shall be likened unto a foolish man, which built his house upon the sand--denoting a loose foundation--that of an empty profession and mere external services.

Heareth these sayings . . . and doeth them not. The hearer who obeys not is likened to the foolish man who built his house on the sand. Every one knows how transitory and shifting is a sandy foundation. Whole towns on the Missouri or lower Mississippi have been undermined and gone into the vortex because they were built upon the sand. So will fall the disobedient.