Luke 17:33
"Whosoever shall seek to save his life shall lose it; and whosoever shall lose his life shall preserve it."
Cross References (ranked by relevance)
Matthew 10:39
13
He that findeth his life shall lose it: and he that loseth his life for my sake shall find it.
John 12:25
12
He that loveth his life shall lose it; and he that hateth his life in this world shall keep it unto life eternal.
Matthew 16:25
For whosoever will save his life shall lose it: and whosoever will lose his life for my sake shall find it.
Revelation 2:10
Fear none of those things which thou shalt suffer: behold, the devil shall cast some of you into prison, that ye may be tried; and ye shall have tribulation ten days: be thou faithful unto death, and I will give thee a crown of life.