1 Corinthians 6:12a, Lawful and Expedient
A good paraphrase is “All things are permissible but all things are not profitable”. “Lawful” in the sense that “it is possible, referring to moral possibility or propriety in that it is lawful, right, permissible”. The word “expedient” means “to be profitable, advantageous, to contribute or bring together for the benefit of another.”