Mark 12:41

This passage of story was not in Matthew, but is here and in Luke; it is Christ's commendation of the poor widow, that cast two mites into the treasury, which our Saviour, busy as he was in preaching, found leisure to take notice of. Observe, I. There was a public fund for charity, into which contributions were brought, and out of which distributions were made; a poor's-box, and this in the temple; for works of charity and works of piety very fitly go together; where God is honoured by our worship, it is proper he should be honoured by the relief of his poor; and we often find prayers and alms in conjunction, as Act 10:2, Act 10:4. IT is good to erect public receptacles of charity for the inviting and directing of private hands in giving to the poor; nay it is good for those who are of ability to have funds of their own, to lay by as God has prospered them (Co1 16:2), that they might have something ready to give when an object of charity offers itself, which is before dedicated to such uses. II. Jesus Christ had an eye upon it; He sat over against the treasury, and beheld now the people cast money into it; not grudging either that he had none to cast in, or had not the disposal of that which was cast in, but observing what was cast in.

— Matthew Henry's Concise Commentary (public domain)