'Reserved' in the Bible

For if God spared not angels when they sinned, but cast them down to hell, and committed them to pits of darkness, to be reserved unto judgment;

These are springs without water, and mists driven by a storm; for whom the blackness of darkness hath been reserved.

but the heavens that now are, and the earth, by the same word have been stored up for fire, being reserved against the day of judgment and destruction of ungodly men.