It is the thirty-fourth, and final, verse of the sixth chapter of the Gospel of Matthew in the New Testament and is part of the Sermon on the Mount.

[4][5] The Epicurean writers Anacreon and Horace said: Luz notes that there are two interpretations of this verse: an optimistic and a pessimistic one.

The optimistic view is that this verse is a rephrasing of the ancient idea of carpe diem, live each day to its fullest because one never knows what will happen tomorrow.

[8] This verse is not found in Luke, and Schwatrs, and other scholars, feel it was most likely a composition of the author(s) of Matthew, a concluding remark for what had gone before.

That He says, The morrow shall he 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.

Be not ye therefore anxious for the morrow, thus means, Seek not to have aught beyond that which is necessary for your daily life, for that which is over and above, i. e. To-morrow, shall care for itself.

We are commanded not to be careful about the future, because sufficient for our life is the evil of the days wherein we live, that is to say, the sins, that all our thought and pains be occupied in cleansing this away.

[12] Thomas Sheridan wrote a sermon upon this verse on the occasion of the death of Queen Anne.

Using a verse discussing the "evils" of the day on such an occasion shocked the audience; Sheridan was accused of Jacobite sympathies and lost his chaplaincy.