What does it mean that God is holy, holy, holy?

This article has been translated into the following languages:

Afrikaans العربية বাংলা Bosanski Български 中文 中國話 Dansk Deutsch Español فارسی Français Ελληνικά हिन्दी Hrvatski Bahasa Indonesia Italiano 日本語 Kiswahili 한국어 Magyar Nederlands Polski Português Română Русский සිංහල Slovenčina Slovenščina Srpski Suomi Tagalog தமிழ் ไทย Türkçe Українська اردو Tiếng Việt