John Chrysostom
Catena Aurea · Lukasevangelium 12
Consider the ravens: for they neither sow nor reap; which neither have storehouse nor barn; and God feedeth them: how much more are ye better than the fowls? And which of you with taking thought can add to his stature one cubit? If ye then be not able to do that thing which is least, why take ye thought for the rest?
(Hom. 21. in Matt.) Observe, that when God has once given a soul, it abides the same, but the body is taking growth daily. Passing over then the soul as not receiving increase, he makes mention only of the body, giving us to understand that it is not increased by food alone, but by the Divine Providence, from the fact that no one by receiving nourishment can add any thing to his stature. It is therefore concluded, If ye then be not able to do that thing which is least, take no thought for the rest.