"Government is not reason, it is not eloquence, it is force; like fire, a troublesome servant and a fearful master. Never for a moment should it be left to irresponsible action." - George Washington
This is a great quote that really captures the essence of government. Indeed, government can only operate and rely on force. Who would actually pay all their taxes if it was truly voluntary? Maybe a few die-hard statists, but besides them, nobody in their right mind would be glad to give up their hard-earned cash for the dubious privilege of being harassed by the state apparatus.
Every edict, every order, every command of the government rests on one premise: the use of force. Don't want to pay your taxes? Want to consume something the government doesn't want you to? Want to raise your children how you see fit? Don't want to be conscripted to slaughter foreigners? Too bad. If you dare defy the state, there will be government employees to ensure that you comply, and if you wish to continue to resist their demands, then you will be most likely shot and murdered.
Force keeps the sheeple in line.