Romans 13:6

6.For this reason also, etc. He takes occasion to introduce the subject of tributes, the reason for which he deduces from the office of magistrates; for if it be their duty to defend and safely preserve the peace of the good, and to resist the mischievous attempts of the wicked, this they cannot do unless they are aided by sufficient force. Tributes then are justly paid to support such necessary expenses. (406) But respecting the proportion of taxes or tributes, this is not the place to discuss the subject; nor does it belong to us either to prescribe to princes how much they ought to expend in every affair, or to call them to an account. It yet behooves them to remember, that whatever they receive from the people, is as it were public property, and not to be spent in the gratification of private indulgence. For we see the use for which Paul appoints these tributes which are to be paid — even that kings may be furnished with means to defend their subjects.