What Does God Think of Missionaries? -John Piper
The Apostle Paul explains that to God the Father, the sacrifice of the son was a pleasing aroma, a sacrifice more beautiful than any of the ones that are shown in the Old Testament. This picture is used again to describe the sacrifices that are made by missionaries, both in the past and in the present. The efforts of the missionaries is a greatly pleasing aroma to the Lord, the same fragrance that was embodied in Christ.