'Concerning' in the Bible

Beloved, all diligence using to write to you concerning the common salvation, I had necessity to write to you, exhorting to agonize for the faith once delivered to the saints,

But even when Michael the archangel was arguing with the devil and debating with him concerning Moses' body, he did not dare to bring a slanderous judgment, but said, "May the Lord rebuke you!"

to do judgment against all, and to convict all their impious ones, concerning all their works of impiety that they did impiously, and concerning all the stiff things that speak against Him did impious sinners.'