'Matter' in the Bible

For behold how much diligence this very [thing], being grieved according to [the will of] God, has brought about in you: what defense [of yourselves], what indignation, what fear, what longing, what zeal, what punishment! In everything you have demonstrated yourselves to be innocent in this matter.

And I am giving an opinion in this [matter], because this is profitable for you who not only began previously, a year ago, to do [something], but also to want [to do it].

For [this is] not that for others [there may be] relief, [and] for you difficult circumstances, but [as a matter] of equality.