Did you actually read the article? It quotes the Bible in several places listing specific sins that send people to hell. It even quotes the Pauline epistles giving some of those lists. Do you think the Bible contradicts itself? Do you think Paul contradicts himself?
No, of course the Bible does not contradict itself. I assume you are referring to 1 Corinthians 6:9-11
While inheritance comes with salvation and is a part of salvation, an inheritance in the Kingdom of God is not all there is to salvation. You can lose your inheritance but you cannot lose your salvation.
Inheritance in the Kingdom of God is something entirely different. Your inheritance has to do with receiving rewards of gold, silver and precious stones, crowns, and authority over cities in Christ’s millennial kingdom, based upon what you do for Christ. You cannot obtain any of that inheritance if you do not first become God’s child.
The Lord chastens his children but he doesn’t take away the free gift of salvation. I’ve experience God’s chastening myself and it is not a pleasant thing. Much better to stay on the straight and narrow to begin with.
As with the fornicator in the church of Corinth.
To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus. 1 Corinthians 5:5