Galatians 6:9

9τὸAndδὲ[in] wellκαλὸνdoingποιοῦντεςnotμὴwe should grow wearyἐγκακῶμεν,in timeκαιρῷforγὰρdueἰδίῳwe will reap a harvestθερίσομενnotμὴgiving upἐκλυόμενοι.

And we should not grow fainthearted [in] doing good, for in due time we will reap, not giving up.