'House of the Lord' in the Bible

It shall come to pass in the last days that the mount of the house of the LORD, shall be set in the top of the mountains, and shall be lifted up above the hills: and all nations shall resort thereto.

Now when Hezekiah had received the letter of the messengers, and read it; he went up into the house of the LORD, and opened the letter before the LORD.

Then said Hezekiah, "O what a great thing is this, that I shall go up in to the house of the LORD."

and shall bring all your brethren for an offering unto the LORD: out of all people, upon horses, chariots and horse litters, upon Mules and carts to Jerusalem my holy hill, sayeth the LORD, like as the children of Israel bring the offering in clean vessels to the house of the LORD.