Ambrose of Milan
Catena Aurea · Lukasevangelium 12
Consider the lilies how they grow: they toil not, they spin not; and yet I say unto you, that Solomon in all his glory was not arrayed like one of these. If then God so clothe the grass, which is to day in the field, and to morrow is cast into the oven; how much more will he clothe you, O ye of little faith? And seek not ye what ye shall eat, or what ye shall drink, neither be ye of doubtful mind. For all these things do the nations of the world seek after: and your Father knoweth that ye have need of these things. But rather seek ye the kingdom of God; and all these things shall be added unto you.
But He goes on to shew, that neither at the present time, nor hereafter, will grace be lacking to the faithful, if only they who desire heavenly things seek not earthly; for it is unworthy for men to care for meats, who fight for a kingdom. The king knoweth wherewithal he shall support and clothe his own family. Therefore it follows, But seek ye first the kingdom of God, and all these things shall be added unto you.