The very clearly delineated message of salvation from Jesus Himself, the Gatekeeper to Heaven, is: “deny himself…”, express “a willingness to endure whatever may come”, and “follow Me” – which means “believing in Me, conforming to My example in living”. It’s free. It’s simple. But it will cost you.
Not by strength – by God!
We do not “stay saved” by holding on desperately to His Hand, careful not to fall into Hell. His act of saving us is His act, and it is eternal.