Tony, like so much else in the Bible it depends on who you listen to. 50% say it's conditional and they give xyz scriptures to prove their point. The other 50% say it's unconditional and they give qrv scriptures to prove their point. You have a 50% chance of being right if the Fundamentalists interpret scripture correctly because if you choose the wrong one you'll burn in hell for all eternity---or a 100% chance of being right if the universalists interpret scripture correctly because no matter which one you pick you'll eventually get to heaven. So take your pick.
And choose carefully.