'Profitable' in the Bible

These things remind them of, testifying fully before the Lord -- not to strive about words to nothing profitable, but to the subversion of those hearing;

if, then, any one may cleanse himself from these, he shall be a vessel to honour, sanctified and profitable to the master -- to every good work having been prepared,

every Writing is God-breathed, and profitable for teaching, for conviction, for setting aright, for instruction that is in righteousness,

Lukas only is with me; Markus having taken, bring with thyself, for he is profitable to me for ministration;