I can go up to a fellow christian as an individual and inform another individual christian of a situation involving a needy non christian and ask if they would like to help out monetarily or for other things like clothes. There is nothing in the Bible that prohibits me from doing so. However, the church treasury is used for things like upkeep for the building, preacher's salary, spreading the Word, supporting preachers in other countries, and for needy saints. That is all that scripture indicates that the church treasury is used for. There is a difference between church benevolence and individual Christian benevolence.