Church Fathers on Matthew 6:34
Having forbid anxiety for the things of the day, He now forbids anxiety for future things, such a fruitless care as proceeds from the fault of men, in these words, 'Be not ye anxious about the morrow.'
Tomorrow in Scripture signifies time future, as Jacob in Genesis says, 'Tomorrow shall my righteousness hear me.' [Gen 35:33] And in the phantasm of Samuel the Pythoness says to Saul, 'Tomorrow shalt thou be with me.' [1 Sam 28:19]
Nothing brings so much pain to the spirit as anxiety and cark. That He says, 'The morrow shall be anxious for itself,' comes of desire to make more plain what He speaks; to that end employing a prosopopeia of time, after the practice of many in speaking to the rude populace; to impress them the more, He brings in the day itself complaining of its too heavy cares. Has not every day a burden enough of its own, in its own cares? why then do you add to them by laying on those…