Having confidence in thy obedience - That you would comply with all my expressed desires.
I wrote unto thee - “I have written to you;” to wit, in this Epistle.
Knowing that thou wilt also do more than I say - In all the respects which he had mentioned - in receiving Onesimus, and in his kind treatment of him. He had asked a great favor of him, but he knew that he would go even beyond what he had asked.