KJV - I therefore so run, not as uncertainly; so fight I, not as one that beateth the air:

ASV - I therefore so run, as not uncertainly; so fight I, as not beating the air:

BBE - So then I am running, not uncertainly; so I am fighting, not as one who gives blows in the air:

WEB - I therefore run like that, as not uncertainly. I fight like that, as not beating the air,

YLT - I, therefore, thus run, not as uncertainly, thus I fight, as not beating air;

Notes