God has Entrusted the Ministry of the Word to You, Not its Results. – R C Sproul
Your life is a letter written in your heart; everyone can read it and recognize your good work. Clearly, you are a letter from Christ showing the result of your ministry among you. This “letter” is written not with pen and ink, but with the Spirit of the living God. It is carved not on tablets of stone, but on your human heart.
You are our epistle written in our hearts, known and read by all men; clearly you are an epistle of Christ, ministered by us, written not with ink but by the Spirit of the living God, not on tablets of stone but on tablets of flesh, that is, of the heart. – 2 Corinthians 3:2-3 – NKJV