Ye are saved, if ye hold fast — Your salvation is begun, and will be perfected, if ye continue in the faith. Unless ye have believed in vain — Unless indeed your faith was only a delusion.
Related Commentaries of 1 Corinthians 15:2
1 Corinthians 15:2
2 By which also ye are saved, if ye keepa in memory what I preached unto you, unless ye have believed in vain.