Esther Lutzer spent years serving in the mission field in Gabon. She writes, "I thank God for His patience with me as He led me to Gabon and then home again. ÒFor God, who said, ÔLet light shine out of darkness,Õ made his light to shine in our hearts to give us the light of the knowledge of the glory of God in the face of Jesus Christ. But we have this treasure in jars of clay to show that this all-surpassing power is from God and not from usÓ (2 Corinthians 4:6-7, emphasis added)."