'Concerning' in the Bible

For we do not want you to be ignorant, brothers, concerning our affliction that happened in the [province of] Asia, that we were burdened to an extraordinary degree, beyond [our] strength, so that we were in despair even of living.

If [there is a question] concerning Titus, [he is] my partner and fellow worker for you. If [there is a question concerning] our brothers, [they are] messengers of the churches, the glory of Christ.

For it is unnecessary for me to write to you concerning the ministry to the saints,

because I know your readiness [to help], [concerning] which I keep on boasting to the Macedonians about you, that Achaia has been ready [to help] since last year, and your zeal has stirred up the majority [of them].

You are looking at things according to appearance. If anyone is convinced he himself is Christ's, he should consider this concerning himself again: that just as Christ himself [is], so also [are] we.