2 Corinthians 4:13

4:13 But since we have the same spirit of faith as that shown in what has been written, “I believed; therefore I spoke,” we also believe, therefore we also speak.

2 Corinthians 8:7

8:7 But as you excel in everything – in faith, in speech, in knowledge, and in all eagerness and in the love from us that is in you – make sure that you excel in this act of kindness too.

2 Corinthians 10:15

10:15 Nor do we boast beyond certain limits in the work done by others, but we hope that as your faith continues to grow, our work may be greatly expanded among you according to our limits,

2 Corinthians 13:5

13:5 Put yourselves to the test to see if you are in the faith; examine yourselves! Or do you not recognize regarding yourselves that Jesus Christ is in you – unless, indeed, you fail the test!