There’s no set purpose for forming a Govt beyond that which seems advantageous to a society at any given time and circumstances. It might be formed by religious authorities for their own purposes, for national defence, law and order or to set up and police commercial activities.

Stuff like taxes and redistribution are simply complexities that tend to be added to keep the thing going past the original basic purposes for which it was set up and often these complexities improve the well being of the society.. human ambition and greed are not necessarily bad reasons for perpetuating a government.. in fact altruism may be the very worst reason for keeping government going.

JC

To answer the question properly some context is needed, such as, ‘what precisely does the questioner mean by redistribution?’

Any government action is necessarily going to be redistributionative.

Any sort of social safety net is going to be the same.