Translation
However, he who stands firm in is heart, not having force [put upon him],
Go to footnote numberbut having authority over his own will, and has judged in his own mind to watch over his own virgin [daughter], he does well.
Paraphrase
However, the one who has his mind firmly made up, and is not being compelled one way or the other, but has mastery over his own will and decision-making and has determined in his own mind to keep his virgin [daughter] close to him so he can guard protect her, he does a good thing.
Footnotes
1
The verb used here means “constraint, necessity, force, violence, compulsion.” It depicts strong action. We might say “strong pressure.”