Hebrews 12:11

11Allπᾶσαnowδὲdisciplineπαιδείαforπρὸςindeedμὲνthoseτὸbeing presentπαρὸνnotοὐseemsδοκεῖof joyχαρᾶςto beεἶναιbutἀλλὰof griefλύπης,afterwardὕστερονhoweverδὲ[the] fruitκαρπὸνpeaceableεἰρηνικὸνto thoseτοῖςbyδι’itαὐτῆςhaving been trainedγεγυμνασμένοιςit yieldsἀποδίδωσινof righteousnessδικαιοσύνης.

And all discipline indeed for the present does not seem to be of joy, but of grief; but afterward it yields the peaceable fruit of righteousness to those having been trained by it.