Isn’t taxing everyone so that you can redistribute wealth just another way of imposing Christian values on society at the gunpoint of government? How is that any different, in principle, from outlawing homosexual behavior, or forcing children to pray Christian prayers in school, or using public resources to display a nativity scene but not other religious displays on public property? Or should people whose religions don’t mandate feeding of the poor be exempted from taxes to pay for welfare?
I don’t remember ever reading anything in scripture about Jesus telling His followers that they should try to force other people to give money to the poor. After all, He doesn’t actually need us to take care of the poor; He could feed them all forever with a thought. What He wants is faithful, generous hearts governed by His love and holiness, not a church full of people who say “I will give to the poor as long as everyone else is forced to give to the poor (at a progressive rate based on income, of course).” So it is the Christian who will feed the poor, himself, cheerfully and from his own riches, that pleases God, not the mere fact that the poor are fed.
True liberalism, also known as “libertarianism”, which values the individual and his freedom over collective goals, may very well be the most Christian political attitude. I certainly think it is. But political leftism, which seems to be what you’re advocating here, is no more Christian than the conservatism you left behind.