Passage
Mine unformed substance Thine eyes saw, And on Thy book all of them are written, The days they were formed--And not one among them.
Mine unformed substance Thine eyes saw, And on Thy book all of them are written, The days they were formed--And not one among them.
Psalms 139:14 I confess Thee, because that <FI>with<Fi> wonders I have been distinguished. Wonderful <FI>are<Fi> Thy works, And my soul is knowing <FI>it<Fi> well.
Psalms 139:15 My substance was not hid from Thee, When I was made in secret, Curiously wrought in the lower part of earth.
Psalms 139:16 Mine unformed substance Thine eyes saw, And on Thy book all of them are written, The days they were formed--And not one among them.
Psalms 139:17 And to me how precious have been Thy thoughts, O God, how great hath been their sum!
Psalms 139:18 I recount them! than the sand they are more, I have waked, and I am still with Thee.
The verse centers on "mine", "unformed", "substance", "thine", "eyes", "book", "written", and "days". It is saying that the verse draws attention to "mine" and "unformed", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 15's "My substance was not hid from Thee..." into verse 17's "And to me how precious have been...", so "mine" and "unformed" 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 "mine" and "unformed" with trust shaped by these words, not by a vague optimism outside the passage.