To the choirmaster. A Psalm of David. 1  O Lord, you have searched me and known me! 2  You know when I sit down and when I rise up; you discern my thoughts from afar. 3  You search out my path and my lying down and are acquainted with all my ways. 4  Even before a word is on my tongue, behold, O Lord, you know it altogether. 5  You hem me in, behind and before, and lay your hand upon me. 6  Such knowledge is too wonderful for me; it is high; I cannot attain it.”