1) avoids being feminized (especially avoids of excessive attachment to women);
2) displays virility and strength (including warfare);
3) acts with honor (including provision for family, especially the women);
4) speaks with persuasiveness, wisdom, honesty.*
Of course, these categories distill the ten or so criteria offered by David Clines years ago. What intrigues me is the dissonance in our constructions of the historical Jesus versus the Gospel portraits of him along these lines. Would it be safe to say that the New Testament portraits of Christ heighten his masculinity? Concerning number two, I am reminded of the portrait of Jesus in John's apocalypse.
*The important distinction here is between “hegemonic” and “subordinate” masculinities. These four criteria are generally associated with varieties of hegemonic masculinity. Interestingly, the Lord seems to favor men with subordinate masculinities in Genesis to a surprising extent.