If the majority of them had, then they probably wouldn't have had have their capital city Jerusalem be destroyed on multiple occasions as a punishment from Yahweh.
So they were destroyed for not believing in the Trinity of God? Don't think so.
That argrument is weak as you discount the times the Nation was faithful with good kings and godly prophets. None of the prophets of old worshiped a Trinity concept of God, but Constantine did? Those that wouldn't accept the Trinity were labeled as heretics and some put to death by the adherents? Does that sound like the true concept of God finally revealed? No. A person doesn't even need the Bible to refute the Trinity doctrine. Logic and history is enough to do so.
I just want to say that if you will look up the writings of the early "Church Fathers" BEFORE the Council of Nicea, such as Tertullian, Ignatius, etc, you will see clearly that they were Trinitarians and they taught the Trinity well BEFORE 325 CE.
I've read early "Church Fathers" writings and just as many were non-Trinitarians. None of the Bible writers or Jesus himself clearly spells it out. It wasn't until later that pagan Greek philosophical metaphysics about the nature of God influenced some early "Church Fathers" in that direction.
Think About It