2Cor.3.2

2 Corinthians 3:2

KJV

Ye are our epistle written in our hearts, known and read of all men:

1 Corinthians 9:2

KJV

If I be not an apostle unto others, yet doubtless I am to you: for the seal of mine apostleship are ye in the Lord.

2 Corinthians 3:1

KJV

Do we begin again to commend ourselves? or need we, as some others, epistles of commendation to you, or letters of commendation from you?