Because, etc
Isaiah 66:1
Thus saith the LORD, The heaven is my throne, and the earth is my footstool: where is the house that ye build unto me? and where is the place of my rest?
Acts 7:49
Heaven is my throne, and earth is my footstool: what house will ye build me? saith the Lord: or what is the place of my rest?
will have war
Psalm 21:8-11
8
Thine hand shall find out all thine enemies: thy right hand shall find out those that hate thee.
9
Thou shalt make them as a fiery oven in the time of thine anger: the LORD shall swallow them up in his wrath, and the fire shall devour them.
10
Their fruit shalt thou destroy from the earth, and their seed from among the children of men.
11
For they intended evil against thee: they imagined a mischievous device, which they are not able to perform.