2 Corinthians 3:2

Ye are our epistle; his letter of commendation, which all could read. He says here, "written in our hearts," because he wishes thus to express the place which the Corinthian converts have in his affections. In the next verse he represents the epistle as written, by his ministration, on the hearts of the Corinthians, because it is there that the gospel has exerted its power. Such changes of figure are very common with Paul.