John Piper has a book out that I highly recommend. It’s called, “What’s the difference. Manhood & Womanhood defined according to the Bible” and you can find it here: http://amzn.com/143350278X as well as on his website desiringgod.org.
In this short but effective book, Piper defines Biblical masculinity by saying, “At the heart of mature masculinity is a sense of benevolent responsibility to lead, provide for and protect women in ways appropriate to a man’s differing relationships.”
He makes the following statement:
A man might say, “I am a man and I do not feel this sense of responsibility that you say makes me masculine.” He may feel strong and sexually competent and forceful and rational. But we would say to him that if he does not feel this sense of benevolent responsibility toward women [and his children] to lead, provide and protect, his masculinity is immature. It is incomplete and perhaps distorted.
“Mature” means that a man’s sense of responsibility is in the process of growing out of its sinful distortions and limitations, and finding its true nature as a form of love, not a form of self-assertion.