NET
37 But the man who is firm in his commitment, and is under no necessity but has control over his will, and has decided in his own mind to keep his own virgin, does well.
Darby
37 But he who stands firm in his heart, having no need, but has authority over his own will, and has judged this in his heart to keep his own virginity, he does well.
KJV
37 Nevertheless he that standeth stedfast in his heart, having no necessity, but hath power over his own will, and hath so decreed in his heart that he will keep his virgin, doeth well.