A Major General in the Venezuelan army says the institution will not accept the victory of an opposition candidate in the next presidential election. It is the sort of statement that should immediately result in the forced retirement of the officer. It is, in fact, a statement that goes contrary to the Venezuelan constitution. From article 328 about the military's role:
En el cumplimiento de sus funciones, está al servicio exclusivo de la Nación y en ningún caso al de persona o parcialidad política alguna.
It should go without saying that the job of the armed forces is not to pick and choose what president its leadership wants (though, depending on the country, they may cast their own individual vote for whomever they want). It most certainly should not be issuing threats about refusing to accept the results of democratic elections.