Our Devotional Thought for today discusses that much talked about topic :
"There is a sin unto death."
It is mentioned in this Scripture Passage:
“If any man see his brother sin a sin which is not unto death,
he shall ask (pray),
and he shall give him life for them that sin not unto death.
There is a sin unto death:
I do not say that he shall pray for it.”
I John 5:16
For a short explanation of this verse and the Deadly Sin HERE'S THE LINK