Can a Chrisitan lose his/her salvation?

[Jehanne]

I want everyone to read the end of the Gospel of Thomas:

113. His disciples said to him, "When will the kingdom come?"

"It will not come by watching for it. It will not be said, 'Look, here!' or 'Look, there!' Rather, the Father's kingdom is spread out upon the earth, and people don't see it."

[Saying probably added to the original collection at a later date:]

114. Simon Peter said to them, "Make Mary leave us, for females don't deserve life."

Jesus said, "Look, I will guide her to make her male, so that she too may become a living spirit resembling you males. For every female who makes herself male will enter the kingdom of Heaven."

http://gnosis.org/naghamm/gosthom.html