Hypocrisy and the Deceit of Man
The psalmists believe that it is foolish to rely on mortals since most are deceitful and will betray their friends in times of trouble. Righteous people rely on God. This is a common theme in Psalms. The psalmist proclaims: “I said in my haste, all men are deceitful” (Psalm 116:11). Perhaps not everyone is deceitful; however, a large number of people are indeed devious and falsehearted.
Everyone lies to his neighbor; their flattering lips speak with deception May the Lord cut off all flattering lips, and the tongue that speaks of haughty things: Who have said, “With our tongue will we prevail; our lips are our own: who is master over us?” (Psalm 12:3-5).
Also, my close friend, in whom I trusted, who ate my bread, has lifted up his heel against me [to trample me] (Psalm 41:10). But you, O God, You shall lower them down into the pit of destruction: men of blood and deceit shall not live out half their days; but I will trust in You (Psalm 55:24).
O God, whom I praise, do not remain silent. For wicked and deceitful men have opened their mouths against me; they have spoken against me the language of falsehood. With words of hatred they surround me, they attack me without cause. In return for my love they accuse me, but I give myself to prayer. They repay me evil in return for good, and hatred in return for my love (Psalm 109: 1-4).