You know - it's the females who do the hunting, while the 'old man' just festers with his pals - unless they see an imminent 'rumble' in the form of another bunch of younger males approaching, looking to see if they can take over the females ! They actually count their potential opponents, to assess their chances.
Anyway, 'the kingdom of heaven is taken by the violent', if we understand true strength, enduring, spiritual strength as passive strength, the strength to endure, as in that strange exultant declaration on the occasion of Jesus' crucifixion :
Colossians 2:15
"When He had disarmed the rulers and authorities [those supernatural forces of evil operating against us], He made a public example of them [exhibiting them as captives in His triumphal procession], having triumphed over them through the cross."
But, of course, it's still down to grace, as this person indicates :
The Kingdom of Heaven Taken by Violence
Sorry for digressing so far, Neogaia777. I was going to reply : 'You and most of Chistendom', but there are a lot of more interesting aspects that other posters have suggested, aren't there ? Well you have said so.