Government taxation for the purpose of redistributing wealth is NOT charity. In short order it becomes plunder! Governmental power can gradually enslave its people to servitude by making it impossible for diligent, wise citizens to prosper. Remember, when the government takes from the productive element of society and gives that property to another who has not earned it, incentive is destroyed.
Furthermore, under the guise of a government program outright theft is occurring! You should read this article by Walter Williams and think deeply about what he is saying. Certainly the Bible teaches private ownership of property, individual responsibility with liberty to prosper overtime, and a limited role of government which exists to guarantee liberty and protect private property rights.
The Bible also teaches individuals to exercise charity and minister to the legitimate needs of others. However, the Bible does not condone socialistic programs seated in governmental power with the potential of oppressing its people and plundering the fruits of their labor.
The church needs to encourage such virtues as hard work, diligence, self-control, and charity in the lives of its people. As well, we need to be a voice for limited government in the interest of maximizing liberty and prosperity in the land.