It is not sufficient simply to point to texts that instruct Christians to “pay taxes,” and to conclude on that basis that all taxes are morally legitimate. For Christians are instructed to obey ungodly authorities, too; this instruction does not render those authorities godly, nor their behaviour legitimate.
To construct an adequate Christian political philosophy, each category of governmental action – from welfare provision to healthcare, from the judiciary to the military, from education to public roads and utilities – requires clear biblical justification. The mere absence of a specific biblical prohibition of a certain governmental action is not sufficient, because even if the action considered in itself is morally legitimate (e.g. the education of children), this does not justify the coercive taxation of citizens in order to fund that action without their explicit consent.