'Holy' in the Bible

Let a time be fixed for going without food, have a holy meeting, let the old men, even all the people of the land, come together to the house of the Lord your God, crying out to the Lord.

Let the horn be sounded in Zion, and a war-cry in my holy mountain; let all the people of the land be troubled: for the day of the Lord is coming;

Let a horn be sounded in Zion, let a time be fixed for going without food, have a holy meeting:

Get the people together, make the mass of the people holy, send for the old men, get together the children and babies at the breast: let the newly married man come out of his room and the bride from her tent.

And you will be certain that I am the Lord your God, living in Zion, my holy mountain: and Jerusalem will be holy, and no strange person will ever again go through her.