Acts 8:26

26. When the congregation in Samaria had been supplied with spiritual gifts, and sufficiently instructed to justify leaving them to their own resources for edification, Philip was called away to other fields of labor.

We are now introduced to another of those minutely detailed cases of conversion which are recorded for the purpose of instruction in reference to the means of turning men to God, and inducing them into the kingdom. The purpose of bringing him to a knowledge of salvation was formed in the divine mind, and specific means of accomplishing it put into operation, ere the man himself was aware of it. The narrative traces the steps by which this purpose of God was accomplished, and enables us to know, when God determines upon the conversion of an individual, how he proceeds to effect it.And an angel of the Lord spoke to Philip, saying, Arise and go toward the south, into the road which goes down from Jerusalem to Gaza. This is a desert." This is all that the angel has to say; and now his part of the work, which was simply to start the evangelist in the direction of the person to be converted, is accomplished. He retires from the scene.

The statement "this is a desert" is correctly supposed, by the best commentators, to be no part of the angel's speech to Philip, but to have been added by Luke to note the singularity of a preacher being thus peremptorily sent away from a populous country into a desert. The term desert is not here to be understood in its stricter sense of a barren waste, but in its more general acceptation, of a place thinly inhabited. Such an interpretation is required by the geography of the country, and by the fact that water was found for the immersion of the eunuch. The only road from Jerusalem to Gaza, which passed through a level district suitable for wheeled vehicles, was that by Bethlehem to Hebron, and thence across a plain to Gaza. According to Dr. Hackett, this is "the desert" of Luke 1:80 Luke 1:80>, in which John the Immerser grew up. Dr. S. T. Barclay, who traversed this entire route in May, 1853, says that he traveled, after leaving "the immediate vicinity of Hebron, over one of the very best roads (with slight exceptions) and one of the most fertile countries that I ever beheld."