Tiberius meantime, while securing to himself the substance of imperial power, allowed the Senate some shadow of its old constitution by referring to its investigation certain demands of the provinces. In the Greek cities license and impunity in establishing sanctuaries were on the increase. Temples were thronged with the vilest of the slaves; the same refuge screened the debtor against his creditor, as well as men suspected of capital offences. No authority was strong enough to check the turbulence of a people which protected the crimes of men as much as the worship of the gods. It was accordingly decided that the different states were to send their charters and envoys to Rome. Some voluntarily relinquished privileges which they had groundlessly usurped; many trusted to old superstitions, or to their services to the Roman people. It was a grand spectacle on that day, when the Senate examined grants made by our ancestors, treaties with allies, even decrees of kings who had flourished before Rome's ascendancy, and the forms of worship of the very deities, with full liberty as in former days, to ratify or to alter.