Consequences Of Refusing To Repent And Believe!

Matthew; 25:46
(And these will go away into everlasting punishment, but the righteous into eternal life.")

The punishment of unbelief is never ending, continuous suffering in the lake of fire. You don't just die and that is the end. The Scripture tells us that it is eternal, no second chances and no getting out. Jesus tells us in the book of Matthew that it is everlasting.
Matthew; 25:41
("Then He will also say to those on the left hand, 'Depart from Me, you cursed, into the everlasting fire prepared for the devil and his angels;)
The fire does not end and neither do you. You will suffer shame and you will know that your punishment is just and that you deserve it. You chose not to believe in the name of the only begotten Son of God ( Jesus Christ ) which was your only means of Salvation.

Jesus tells us that the fire is unquenchable.
Matthew; 3:12
(His winnowing fan is in His hand, and He will thoroughly clean out His threshing floor, and gather His wheat into the barn; but He will burn up the chaff with unquenchable fire".)
When the angels gather up all the believers and put them in the barn, all that will be left is those who chose not to believe or the chaff. God is very clear here, you either belong to Him ( the wheat) or to the devil (the chaff). Jesus also mentioned this in the parable of the wheat and the tares. They were both growing together in the same field.
Matthew; 13:30
(Let both grow together until the harvest, and at the time of harvest I will say to the reapers, "First gather the tares and bind them in bundles to burn them, but gather the wheat into my barn." ' ")

Jesus came to save sinners of which we all are. Some of us have put their faith in him and had their sins forgiven, (Believers). Others have chose not to believe and put their faith in Him for forgiveness of sins, (Unbelievers), thus incurring the consequences of unbelief. This is eternal separation from God in the Lake of Fire.
Revelation; 20:15
(And anyone not found written in the Book of Life was cast into the lake of fire.)
Don't be an unbeliever, put your faith in Jesus Christ and ask Him to save you. Admit that you are a sinner and in need of Him as your Savior. He is the only means of Salvation and forgiveness of sin.
John; 3:16-18
(For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. For God did not send His Son into the world to condemn the world, but that the world through Him might be saved. "He who believes in Him is not condemned; but he who does not believe is condemned already; because he has not believed in the name of the only begotten Son of God.)

God Bless You!