Ban of the Valar

From Tolkien Gateway

The Ban of the Valar was the ban placed by the Valar on the Númenóreans, that they should not sail so far west from their island that they could not see its coasts. The first King of Númenor who spoke against it was Tar-Atanamir, believing that reaching Aman would grant them Immortality. It was the breaking of the Ban by Ar-Pharazôn that led to the Downfall of Númenor.[1][2]

References

Númenor
Andor · Atalantë · Elenna · Mar-nu-Falmar · Númenórë · Westernesse
Regions Andustar · Arandor · Emerië · Forostar · Hyarastorni · Hyarnustar · Hyarrostar · Mittalmar · Nísimaldar · Orrostar
Towns and cities Almaida · Andúnië · Armenelos · Eldalondë · Moriondë · Nindamos · Ondosto · Rómenna
Buildings Calmindon · Eämbar · King's Court · Temple · White House of Erendis
Natural features Bay of Eldanna · Bay of Rómenna · Firth of Rómenna · Hallow of Eru · Meneltarma (mountain) · Nísinen (lake) · North Cape · Nunduinë (river) · Oromet (mountain) · Siril (river) · Sorontil (mountain) · Tarmasundar (ridges) · Tompollë
Plants and trees Fragrant Trees · Lairelossë · Laurinquë · Lavaralda · Nessamelda · Nimloth · Oiolairë · Taniquelassë · Vardarianna · Yavannamírë
Heirlooms Aranrúth · Bow of Bregor · Dramborleg · Elendilmir · Narsil · Palantíri · Ring of Barahir · Sceptre of Annúminas · Sceptre of Númenor · Tile and Textiles · Helmet
Concepts Adûnaic · Ban of the Valar · Council of the Sceptre · Downfall of Númenor · Great Bear-dance · Heirship · Númenórean Sindarin · Three Prayers (Eruhantalë · Erukyermë · Erulaitalë)
Key people Aldarion · Amandil · Anárion · Captain of the King's Ships · Elendil · Elros (House of Elros) · Erendis · Faithful · Great Armament · Guild of Venturers · Guild of Weaponsmiths · Isildur · Kings and Queens of Númenor · King's Archers · King's Men · Lords of Andúnië · Meneldur · Miriel · Palantir · Pharazôn · Sauron · Silmariën
Main texts The Silmarillion ("Akallabêth") · Unfinished Tales ("A Description of the Island of Númenor" · "Aldarion and Erendis: The Mariner's Wife" · "The Line of Elros: Kings of Númenor") · The Lord of the Rings ("Appendix A" · "Appendix B") · The Nature of Middle-earth ("Lives of the Númenóreans" · "Of the land and beasts of Númenor")