The Bible tells us that the punishment for sin is death.
Rom_6:23 For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
Wicked people will be punished with fire that will turn them to ashes.
Psa 11:5 The LORD trieth the righteous: but the wicked and him that loveth violence his soul hateth.
Psa 11:6 Upon the wicked he shall rain snares, fire and brimstone, and an horrible tempest: this shall be the portion of their cup.
Mal 4:3 And ye shall tread down the wicked; for they shall be ashes under the soles of your feet in the day that I shall do this, saith the LORD of hosts.
Satan will also be punished with fire that will turn him to ashes.
Eze 28:18 Thou hast defiled thy sanctuaries by the multitude of thine iniquities, by the iniquity of thy traffick; therefore will I bring forth a fire from the midst of thee, it shall devour thee, and I will bring thee to ashes upon the earth in the sight of all them that behold thee.
Eze 28:19 All they that know thee among the people shall be astonished at thee: thou shalt be a terror, and never shalt thou be any more.