Neither can it constitutionally pass laws or impose requirements which aid all religions as against non-believers, and neither can it aid those religions based on a belief in the existence of God as against those religions founded on different beliefs." Such prohibited behavior was self-evident in the Pennsylvania law requiring Bible reading (and allowing recitation of the Lord's Prayer) in its public schools. The Court recognized the value of such ideal neutrality from lessons of history when government and religion were either fully fused or cooperative with one another and religious liberty was nonexistent or seriously curtailed.