Teaching the poor to give

2 Corinthians chapter 8 and 9 are the longest passages on giving in the Bible and it starts by focusing on the Macedonians who lived in extreme poverty, yet who gave simply according to their means but they did give beyond their ability. 

God blesses giving and when we hang on to what is His, it's never in our best interest - the poor are not hurt by giving, they are helped by giving.

Bring the full tithe into the storehouse, so that there may be food in my house, and thus put me to the test, says the Lord of hosts; see if I will not open the windows of heaven for you and pour down for you an overflowing blessing. - Malachi 3:10

Give, and it will be given to you. A good measure, pressed down, shaken together, running over, will be put into your lap; for the measure you give will be the measure you get back.  Luke 6:38

If we do not teach people about giving, we deprive them of what God would have provided if they had learned to become givers.