'Concern' in the Bible

to whom also he presented himself living, after he had suffered, with many proofs; being seen by them during forty days, and speaking of the things which concern the kingdom of God;

But Paul, the governor having beckoned to him to speak, answered, Knowing that for many years thou hast been judge to this nation, I answer readily as to the things which concern myself.

Hast thou been called being a bondman, let it not concern thee; but and if thou canst become free, use it rather.

that there might be no division in the body, but that the members might have the same concern one for another.

If it is needful to boast, I will boast in the things which concern my infirmity.