Matthew Henry Commentary Psalms 64:1-6

"Hear my voice, O God, in my complaint: Preserve my life from fear of the enemy. Hide me from the secret counsel of evil-doers, From the tumult of the workers of iniquity; Who have whet their tongue like a sword, And have aimed their arrows, even bitter words, That they may shoot in secret places at the perfect: Suddenly do they shoot at him, and fear not. They encourage themselves in an evil purpose; They commune of laying snares privily; They say, Who will see them? They search out iniquities; We have accomplished, [say they], a diligent search: And the inward thought and the heart of every one is deep." — Psalms 64:1-6 (ASV)

The psalmist earnestly begs God to preserve him from disquieting fear.

The tongue is a little member, but it boasts great things. The upright man is the mark at which the wicked aim; they cannot speak peaceably either of him or to him. There is no guard against a false tongue.

It is bad to do wrong, but worse to encourage ourselves and one another in it. It is a sign that the heart is hardened to the greatest degree, when it is so fully set to do evil.

A practical disbelief of God's knowledge of all things is at the bottom of every wickedness.

The benefit of a good cause and a good conscience appears most when nothing can help a person against their enemies, except God alone, who is always a present help.