Deuteronomy 15:10-11

10Thou shalt surely give him, and thy heart shall not be grieved when thou givest to him: because that for this thing the LORD thy God shall bless thee in all thy works, and in all that thou puttest thy hand to. 11For the poor shall never cease from the land: therefore I command thee, saying, Thou shalt open thy hand wide to thy brother, to thy poor, and to thy needy, in thy land.