'Second Death' in the Bible

he that hath an ear, let him hear what the spirit saith to the churches, he that overcometh, shall not be hurt by the second death."

happy and holy are they that have part in the first resurrection: on such the second death hath no power, but they shall be priests of God, and of Christ, and shall reign with him a thousand years.

and death and the grave were cast into the lake of fire: this is the second death.

but the fearful, and incredulous, the abominable, the murderer, the licentious, the poisoner, the idolater, and every lyar shall have their part in the lake which burns with fire and brimstone: this is the second death."