John Chrysostom — as excerpted in the Catena Aurea on Matthew 6:31-33

“He said not ‘God knoweth,’ but, Your Father knoweth, in order to lead them to higher hope; for if He be their Father, He will not endure to forget his children, since not even human fathers could do so. He says, That ye have need of all these things, in order that for that very reason, because they are necessary, ye may the more lay aside all anxiety. For he who denies his son bare necessaries, after what fashion is he a father? But for superfluities they have no right to look with the like confidence.”