תַּסְתִּ֥יר פָּנֶיךָ֮ יִֽבָּהֵ֫ל֥וּן תֹּסֵ֣ף ר֭וּחָם יִגְוָע֑וּן וְֽאֶל־עֲפָרָ֥ם יְשׁוּבֽוּן׃
Thou hidest Thy face, they vanish; Thou withdrawest their breath, they perish, And return to their dust.
Read Jewish philosophical commentary on Psalms 104:29: and classical philosophical sources.