New Defender's Study Bible Notes
139:8 thou art there. Thus God is omnipresent. Since he is always present everywhere, He cannot actually be seen anywhere, except in some special theophany or incarnation. See notes on John 1:18.
139:9 wings of the morning. This phrase speaks of the east; “uttermost parts of the [Mediterranean] sea” speaks of the west. Whether highest heaven or deepest hell (Psalm 139:8), east or west, day or night (Psalm 139:10-11), God is omnipresent.