Psalms 26:3

For thy loving-kindness is before mine eyes -Thy favor or friendship is constantly before me, in the sense that it is the object of my desire. I wish to secure it; I long to know whether I have sufficient evidence that it is mine. This is a reason why he desires that God would search him. The favor or the friendship of God was an object of intense desire with him. He had evidence upon which he relied, and which seemed to him to be satisfactory, that God was his friend. But the object was so great, the matter was so important, the danger of self-deception was so imminent, that he did not dare to trust his own judgment, and he prayed that God would search him.