כַּאֲשֶׁ֨ר אֵֽינְךָ֤ יוֹדֵ֙עַ֙ מַה־דֶּ֣רֶךְ הָר֔וּחַ כַּעֲצָמִ֖ים בְּבֶ֣טֶן הַמְּלֵאָ֑ה כָּ֗כָה לֹ֤א תֵדַע֙ אֶת־מַעֲשֵׂ֣ה הָֽאֱלֹהִ֔ים אֲשֶׁ֥ר יַעֲשֶׂ֖ה אֶת־הַכֹּֽל׃
As thou knowest not what is the way of the wind, Nor how the bones do grow in the womb of her that is with child; Even so thou knowest not the work of God Who doeth all things.
Aramaic Targum to Ecclesiastes
5. Just as you do not know how the breath of the spirit of life enters the body [of an embryo] which is lying in its pregnant mother’s womb, and as you do not know if it will be male or female until the time it is born, so you do not know the work of הי who does everything in His wisdom.