That they might set their hope in God, and not forget the
works of God, but keep his commandments (Ps. 78:7).
Here the Psalmist points out the use to which the doctrine
which he had stated should be applied. In the first place, the fathers, when
they find that on the one hand they are instrumental in maintaining the pure
worship of God, and that on the other, they are the means of providing for the
salvation of their children, should, by such a precious result of their labors,
be the more powerfully stirred up to instruct their children.
In the second place, the children on their part, being
inflamed with greater zeal, should eagerly press forward in the acquisition of
divine knowledge, and not suffer their minds to wander in vain speculations,
but should aim at, or keep their eyes directed to, the right mark. It is
unhappy and wretched toil to be “ever learning, and never able to come to the
knowledge of the truth,” (2 Tim.3:7).
When, therefore, we hear for what purpose the law was given,
we may easily learn what is the true and most successful method of deriving
benefit from it. The inspired writer places trust first, assigning it
the highest rank. He then requires the observance of the holy commandments of
God; and he puts in the middle the remembrance of the works of God, which
serves to confirm and strengthen faith. In short, what he means is, that the
sum of heavenly wisdom consists in this, that men, having their hearts fixed on
God by a true and unfeigned faith, call upon him, and that, for the purpose of
maintaining and cherishing their confidence in him, they exercise themselves in
meditating in good earnest upon his benefits; and that then they yield to him
an unfeigned and devoted obedience.
We may learn from this, that the true service of God begins
with faith. If we transfer our trust and confidence to any other object, we
defraud him of the chief part of his honor. (Commentaries)