'And the angel of the Lord spake unto Philip, saying, Arise, and go toward the south unto the way that goeth down from Jerusalem unto Gaza, which is desert. 27. And he arose and went: and, behold, a man of Ethiopia, an eunuch of great authority under Candace queen of the Ethiopians, who had the charge of all her treasure, and had come to Jerusalem for to worship, 28. Was returning, and sitting in his chariot, read Esaias the prophet. 29. Then the Spirit said unto Philip, Go near, and join thyself to this chariot. 80. And Philip ran thither to him, and heard him read the prophet Esaias, and said, Understandest thou what thou readest? 31. And he said, How can I, except some man should guide me? And he desired Philip that he would come up and sit with him. 32. The place of the scripture which he read was this, He was led as a sheep to the slaughter; and like a lamb dumb before his shearer, so opened He not His mouth: 33. In His humiliation His judgment was taken away; and who shall declare His generation? for His life is taken from the earth. 34. And the eunuch answered Philip, and said, I pray thee, of whom speaketh the prophet this? of himself, or of some other man? 35. Then Philip opened his mouth, and began at the same scripture, and preached unto him Jesus. 36. And as they went on their way, they came unto a certain water: and the eunuch said, See, here is water; what doth hinder me to be baptized? 37. And Philip said, If thou believest with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God. 38. And he commanded the chariot to stand still: and they went down both into the water, both Philip and the eunuch; and he baptized him. 39. And when they were come up out of the water, the Spirit of the Lord caught away Philip, that the eunuch saw him no more: and he went on his way rejoicing. 40. But Philip was found at Azotus: and passing through, he preached in all the cities, till he came to Caesarea.'--ACTS viii. 26-40.
Philip had no special divine command either to flee to, or to preach in, Samaria, but 'an angel of the Lord' and afterwards 'the Spirit,' directed him to the Ethiopian statesman. God rewards faithful work with more work. Samaria was a borderland between Jew and Gentile, but in preaching to the eunuch Philip was on entirely Gentile ground. So great a step in advance needed clear command from God to impel to it and to justify it.
I. We have, then, first, the new commission. Philip might well wonder why he should be taken away from successful work in a populous city, and despatched to the lonely road to Gaza. But he obeyed at once. He knew not for what he was sent there, but that ignorance did not trouble or retard him. It should be enough for us to see the next step. 'We walk by faith, not by sight,' for we none of us know what comes of our actions, and we get light as we go. Do to-day's plain duty, and when to-morrow is to-day its duty will be plain too. The river on which we sail winds, and not till we round the nearest bend do we see the course beyond. So we are kept in the peaceful posture of dependent obedience, and need to hold our communications with God open, that we may be sure of His guidance.
No doubt, as Philip trudged along till he reached the Gaza road, he would have many a thought as to what he was to find there, and, when he came at last to the solitary track, would look eagerly over the uninhabited land for an explanation of his strange and vague instructions. But an obedient heart is not long left perplexed, and he who looks for duty to disclose itself will see it in due time.