The second destruction will soon come upon the world. They call the second coming of Christ the great and dreadful day of the Lord. It will be a great day for those who love the Lord and follow his commandments and seek to do good in the world. But for those who do wickedness and love Satan more than God, it will be a dreadful day. They will be burned with fire at the presence of our Lord. The flood and the second coming are likened unto baptism where the sins of the world are washed away by the baptism of water and fire.
Malachi 4:1-3
1 For, behold, the day cometh, that shall burn as an oven; and all the proud, yea, and all that do wickedly, shall be stubble: and the day that cometh shall burn them up, saith the Lord of hosts, that it shall leave them neither root nor branch.
2 But unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth, and grow up as calves of the stall.
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.