John 3:16 - What is the definition of eternal? It means without end.
Additionally, since salvation is totally an act of God, to say that it is my perseverance which determines my salvation, takes it out of His hands and puts it in mine. That is unscriptural.
I hear people say this, but then I think, if it's all in His hands, and I have no responsibilities at all, then why, would God bother with the great white throne judgment, I mean if people are little more than pre-programmed "borg", why have any of them stand before you, would'nt judging them be completely unnecessary?
Revelation 20:12-15
12; And I saw the dead, great and small, standing before the throne, and books were opened. Another book was opened, which is the book of life. The dead were judged according to what they had done as recorded in the books. 13; The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what he had done. 14; Then death and Hades were thrown into the lake of fire. The lake of fire is the second death. 15; If anyone's name was not found written in the book of life, he was thrown into the lake of fire.