'Back' in the Bible

We are speaking freely to you, Corinthians [we are keeping nothing back], and our heart is opened wide.

yet I am glad now, not because you were hurt and made sorry, but because your sorrow led to repentance [and you turned back to God]; for you felt a grief such as God meant you to feel, so that you might not suffer loss in anything on our account.

For [you can look back and] see what an earnestness and authentic concern this godly sorrow has produced in you: what vindication of yourselves [against charges that you tolerate sin], what indignation [at sin], what fear [of offending God], what longing [for righteousness and justice], what passion [to do what is right], what readiness to punish [those who sin and those who tolerate sin]! At every point you have proved yourselves to be innocent in the matter.

I have already warned those who have sinned in the past and all the rest as well, and I warn them now even though I am absent [from you] as I did when I was with you the second time, that if I come back I will not spare anyone,