§ Akallabêth The Silmarillion

In those days the Shadow grew deeper upon Númenor; and the lives of the Kings of the House of Elros waned because of their rebellion, but they hardened their hearts the more against the Valar. And the nineteenth king took the sceptre of his fathers, and he ascended the throne in the name of Adûnakhôr, Lord of the West, forsaking the Elven-tongues and forbidding their use in his hearing. Yet hi the Scroll of Kings the name Herunúmen was inscribed in the High-elven speech, because of ancient custom, which the kings feared to break utterly, lest evil befall Now this title seemed to the Faithful over-proud, being the title of the Valar; and their hearts were sorely tried between their loyalty to the House of Elros and their reverence of the appointed Powers. But worse was yet to come. For Ar-Gimilzôr the twenty-second king was the greatest enemy of the Faithful. In his day the White Tree was untended and began to decline; and he forbade utterly the use of the Elven-tongues, and punished those that welcomed the ships of Eressëa, that still came secretly to the west-shores of the land.