The sacramental bread and wine were treated with such superstitious reverence that a Lutheran priest who accidentally spilled the latter was punished by having his fingers cut off.

Melanchthon was against such "remnants of {134} papistry" which he rightly named "artolatry" or "bread-worship." But the civil wars within the Lutheran communion were less bitter than the hatred for the Calvinists.

By 1550 their mutual detestation had reached such a point that Calvin called the Lutherans "ministers of Satan" and "professed enemies of God" trying to bring in "adulterine rites" and vitiate the pure worship.

The quarrel broke out again at the Colloquy of Worms.

Melanchthon and others condemned Zwingli, thus, in Calvin's opinion, "wiping off all their glory." Nevertheless Calvin himself had said, in 1539, that Zwingli's opinion was false and pernicious.