ἀρκετὸν τῇ ἡμέρᾳ ἡ κακία αὐτῆς → sufficient unto the day is the evil thereof, each day has enough trouble of its own, there is no need to add to the troubles each day brings (Matthew 6:34)
care: P. ἐπιμέλεια, ἡ, μελέτη, ἡ.
zeal: P. and V. σπουδή, ἡ, προθυμία, ἡ.
