Two things will kill a man.
One is to ignore the righteous demands of life. The other is to fail to look deeply into the gospel of Christ.
The first will cause untold hardship in this life. Regret and a misshapen identity will haunt everyday you live in this world. You will live all your days as if a walking deadman. In the end, you will despise the man you have been.
The second will do the same thing for eternity.