'Itself' in the Bible

Do not be afraid of the things you are about to suffer. The devil is about to have some of you thrown into prison so you may be tested, and you will experience suffering for ten days. Remain faithful even to the point of death, and I will give you the crown that is life itself.

And the four living creatures, each by itself severally, had six wings, around and within are full of eyes, and rest they have not day and night, saying, 'Holy, holy, holy, Lord God Almighty, who was, and who is, and who is coming;'

Then the fourth angel sounded [his trumpet], and a third of the sun and a third of the moon and a third of the stars were struck, so that a third of them would be darkened and a third of the daylight would not shine, and the night in the same way [would not shine].

Then I saw another beast rising up out of the earth; he had two horns like a lamb and he spoke like a dragon.

The wall was built of jasper; and the city was pure gold, transparent like clear crystal.