If they think any Christians are going to be in hell for 1,000 years or one second they certainly have never read Romans 8:1.
Amen nor have they read Rev20:4 of the saints of whose head authority was the Word of God ,identified as beheaded for the witness of Christ , that lived and reined with Him for a thousand years ,which is a number representing the whole New Testament period ,as a number used many, many ,times over and over throughout scripture to identify a unknown time peroiod .

Rev 20:4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.