Psalm 139:13-16 KJV (JGL comments in parentheses)
13 "For You formed my inward parts; (organ development).
You covered me in my mother’s womb.(The embryonic/fetal human in the placental sac.)
14 I will praise You, for I am fearfully and wonderfully made:
Marvelous are Your works, And that my soul knows very well.
15 My frame was not hidden from You, (The fetal human with the bony frame forming)
When I was made in secret,(Out of sight in David's day.) And skillfully wrought in the lowest parts of the earth. (The embryo implanted in the uterine wall.)
16 Your eyes saw my substance, being yet unformed. (The zygote-fertilized ovum without its bony structure.)
And in Your book they all were written, The days fashioned for me, when as yet there were none of them."
God has had a plan for every embryonic/fetal human being even before fertilization occurred, during the pregnancy, before and after birth Note that development seems to goes from verse 16 to 13.