Mark 8:34-38

And calling the crowd to him with his disciples,
he said to them, "If anyone would come after me,
let him deny himself and take up his cross and follow
me.  For whoever would save his life will
lose it, but whoever loses his life for my sake and the
gospel's will save it.  For what does it profit a man
to gain the whole world and forfeit his soul?  For
what can a man give in return for his soul?  For
whoever is ashamed of me and of my words in this
adulterous and sinful generation, of him will the
Son of Man also be ashamed when he comes in the
Glory of his Father with the holy angels.