'Concerning' in the Bible

if we to-day are under examination concerning the benefit conferred on a man helplessly lame, as to how this man has been cured;

But some of them were Cyprians and Cyrenaeans, who, on coming to Antioch, spoke to the Greeks also and told them the Good News concerning the Lord Jesus.

And, after a few days, He appeared to the people who had gone up with Him from Galilee to Jerusalem and are now witnesses concerning Him to the Jews.

He announced the coming of the Kingdom of God, and taught concerning the Lord Jesus Christ without let or hindrance.