O Lord, you have searched me and known me! 2You know when I sit down and when I rise up; you discern my thoughts from afar. 3You search out my path and my lying down and are acquainted with all my ways. 4Even before a word is on my tongue, behold, O Lord, you know it altogether. 5You hem me in, behind and before, and lay your hand upon me. 6Such knowledge is too wonderful for me; it is high; I cannot attain it.
In psalm 139 we see David praising God for His Omni-status - God's Omniscience, His Omnipresence and Omnipotence. We see David's praise of His creative purpose and His thoughts of care toward His creation. Finally, we see David's response of loyalty and trust.