No weapon that is formed against thee shall prosper; and
every tongue that shall rise against thee in judgment thou shalt condemn. This
is the heritage of the servants of the LORD, and their righteousness is of me,
saith the LORD. (Isa. 54:17)
Even though [wicked men] exert themselves to the utmost,
will gain nothing; for their attacks are guided and restrained by the secret,
purpose of God. He makes use of the word “every,” meaning by it that wicked men
will have the means of attempting many and diversified methods for destroying
the Church, but that their efforts shall be vain and fruitless, 1 for the Lord
will restrain them. Heaven permits them, indeed, to a great extent, in order to
try the patience of believers; but, when God thinks proper, he strips them of
their strength and armor.
having spoken of the “weapons” with which wicked men attack
the Church, he expressly mentions the “tongue;“ because no other “weapon” is so
deadly and destructive. Not only do they revile, and slander, and defame the
servants of God, but, as far as lies in their power, they extinguish the truth of
God, and alienate the hearts of men from it; which ought to distress us more
than if life were taken from us a hundred times. Besides, good and upright men
find slander to be more distressing, and to inflict more severe pain than any
bodily stroke; and, therefore, there was good reason for mentioning this deadly
“weapon.”
Although [the wicked]
assail us by arms, and by the “tongue,” and by “weapons” of every kind,
yet, relying on this prediction, let us hope that we shall be victorious; for
victory is here promised to us, and, since we are certain of it, we ought to
fight valiantly and with unshaken courage. (Commentaries)