John Lightfoot on Luke 11:41

[But rather give alms of such things as ye have.] This seems ironically spoken, and in derision to the opinion they had concerning alms.

1. As to the version of the word of such things, may we not suppose it signifies not only, that which is over and above, as the Vulgar, but also all that you have, as Beza: or not only something that may have respect to the riches of this world, but something also that may have respect to the doctrines and tenets of the Pharisees. As if the meaning was this, "'Those things which are amongst you,' i.e. which obtain commonly amongst you, are to this purpose, 'Give but alms, and all things are clean unto you.'" ...

II. However, that which is over and above, or that which you have, (for I will not be very tenacious in this) yet it is hardly probable that our Saviour utters this as his own, but rather as the words and opinion of the Pharisees. Nor do I think that he speaks these things directly, or by way of directions to them, but that he cites their tenets in mere scoff and displeasure. For indeed, this principle was the spawn of their own schools, that giving of alms had a value in it that served for atonement, justification, salvation, every thing. Hence that common term that reached so comprehensively, righteousness. And hence is it that, in those numberless places in the Holy Scriptures, where the praises of justice and righteousness are celebrated, and all the blessings of it pronounced, they apply it all to the giving of alms. Take on instance for all: "Rabh Asai saith, Alms is equivalent to all the other commandments." "R. Judah saith, Giving of alms is a great thing; for it hastens our redemption. It is written, righteousness, [i.e., giving of alms], delivers from death. Almsgiving, delivereth from sudden death, and from the judgment of hell. R. Meir saith, If any wicked man should make this objection, that if your God love the poor, why doth he not feed them? do thou make this answer; it is, that we by them might be delivered from the judgment of hell."

I fear, indeed, that the Greek interpreters have a touch of this, when they so oftentimes render justice by giving of alms. So that the reader may judge whether our Saviour either would teach, that rapine, injustice, and unrighteousness might be cleansed by giving of alms; or that he would give them any counsel of this nature, when he knew they were sufficiently tinctured with this kind of doctrine already.