'Concerning' in the Bible

For we would not have you ignorant, brethren, concerning our affliction which befell us in Asia, that we were weighed down exceedingly, beyond our power, insomuch that we despaired even of life:

I rejoice that in everything I am of good courage concerning you.

For though I should glory somewhat abundantly concerning our authority (which the Lord gave for building you up, and not for casting you down), I shall not be put to shame:

Concerning this thing I besought the Lord thrice, that it might depart from me.