Passage
Thou hast beset me behind and before, And laid thy hand upon me.
Thou hast beset me behind and before, And laid thy hand upon me.
Psalms 139:3 Thou searchest out my path and my lying down, And art acquainted with all my ways.
Psalms 139:4 For there is not a word in my tongue, But, lo, O Jehovah, thou knowest it altogether.
Psalms 139:5 Thou hast beset me behind and before, And laid thy hand upon me.
Psalms 139:6 [Such] knowledge is too wonderful for me; It is high, I cannot attain unto it.
Psalms 139:7 Whither shall I go from thy Spirit? Or whither shall I flee from thy presence?
The verse centers on "thou", "hast", "beset", "behind", "before", "laid", "hand", and "upon". It is saying that the verse draws attention to "thou" and "hast", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 4's "For there is not a word in..." into verse 6's "Such knowledge is too wonderful for me...", so "thou" and "hast" belong inside that flow. In Psalms context, the local focus is worship, trust, the LORD's kingship, and covenant mercy.
A plain takeaway is to answer the verse's own emphasis on "thou" and "hast" with trust shaped by these words, not by a vague optimism outside the passage.