'Expedient' in the Bible

All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any.

Now as to the matters of which you wrote: It is good (beneficial, advantageous) for a man not to touch a woman [outside marriage].

But I say to the unmarried and to the widows, [that as a practical matter] it is good if they remain [single and entirely devoted to the Lord] as I am.

I think then that because of the impending distress [that is, the pressure of the current trouble], it is good for a man to remain as he is.

All things are lawful for me, but all things are not expedient: all things are lawful for me, but all things edify not.