One of the central themes of Psalm 139 is God's omniscience. Because He created us, He has the most thorough knowledge of our inner workings, and our minds and thoughts. Read the psalm itself for a fuller picture.
Psalm 90Jewish answerTradition states that Adam composed Psalms 92 and 139, so they are the oldest.
Psalm 139:14I praise you because I am fearfully and wonderfully made;your works are wonderful, I know that full well.(NIV Bible)
Psalm 139:16.
You are fearfully and wonderfully made! (Psalm 139) Doesn't get much smarter than that!
david understood God's power and attributes of God inordered to Give reverence and honour and Praise to God David wrote this Psalm if I am Not Wrong.
David tells us a bit about this in Psalm 139. Worth reading.
The audience of Psalm 139 is primarily God, as the psalm is a prayer of David expressing his intimate thoughts and feelings to God. However, it can also be seen as a proclamation to all readers of the awe-inspiring nature of God's knowledge and presence in our lives.
All the way back to Adam, who is credited with having said Psalm 139.
Psalm 22.
It means that God has chosen you from the foundation of the world and ordains and orders all your ways; as David found out in Psalm 139; please read it.
There is no specific evidence that proves who definitively wrote the first Psalm, but most people theorize it was written by King Solomon or possibly his father David..