Name one verse that Jesus said you will lose your salvation.
It's all over the gospels.
In Matthew 7:21-23 Jesus taught that those who do not do the Father's will, regardless of their performance of miracles, something only a true believer can do (Mark 16:17) that they will be rejected. Genuine obedience is required for salvation. This does not necessitate sinless perfection because genuine obedience involves sin confession and repentance as Jesus also taught.
Jesus also taught that those who endure to the end will be saved in Matthew 10:22.
Jesus taught in Matthew 25:1-13, in the parable of the10 virgins that even those with faith, but lack readiness can be shut out.
Matthew 10:33 Jesus said he will deny those before God who have denied him.
Jesus told the churches in Revelation 2-3 they must repent or be removed from his presence.
This very same teaching is all over Paul's letters, in Peter's, James, etc.