'Reserved' in the Bible

Thou hast heard, see the whole of it, And ye, do ye not declare? I have caused thee to hear new things from this time, And things reserved that ye knew not.

Who are dwelling among sepulchres, And lodge in reserved places, Who are eating flesh of the sow, And a piece of abominable things -- their vessels.

to an inheritance incorruptible, and undefiled, and unfading, reserved in the heavens for you,

For if God messengers who sinned did not spare, but with chains of thick gloom, having cast them down to Tartarus, did deliver them to judgment, having been reserved,