Philip the Evangelist, not Philip the Apostle, the first to take the Message out of Jerusalem to the Gentiles

After the resurrection of Jesus, the giving of the Holy Spirit, and the Great Commission to take the message to the world, we see the apostles and first converts have success in Jerusalem:

"You have filled Jerusalem with your teaching..." (Acts 5:28)

"The number of disciples in Jerusalem increased rapidly..." (Acts 6:7)

What was it that was the great impetus of the faith in Jerusalem? It was the stoning of Joseph and the bitter persecution that followed it, to which Nicodemus responded by encouraging the new church.

After the death of Stephen there arose against the believers in Jerusalem a persecution so relentless that “they were all scattered abroad throughout the regions of Judea and Samaria.” Saul “made havoc of the church, entering into every house, and haling men and women committed them to prison.” ...

The disciples had been afraid to show themselves openly as Christ's followers, but Nicodemus and Joseph had come boldly to their aid. The help of these rich and honored men was greatly needed in that hour of darkness. They had been able to do for their dead Master what it would have been impossible for the poor disciples to do; and their wealth and influence had protected them, in a great measure, from the malice of the priests and rulers.

Now, when the Jews were trying to destroy the infant church, Nicodemus came forward in its defense. No longer cautious and questioning, he encouraged the faith of the disciples and used his wealth in helping to sustain the church at Jerusalem and in advancing the work of the gospel. Those who in other days had paid him reverence, now scorned and persecuted him, and he became poor in this world's goods; yet he faltered not in the defense of his faith. 

The persecution that came upon the church in Jerusalem resulted in giving a great impetus to the work of the gospel... 

(Acts of the Apostles, 104)

But after their success in Jerusalem, did they go out to spread the message? No, they didn't. Persecution was the spark that set off the original spread in Jerusalem, and God allowed more persecution to fall upon them to cause the message to go out:

The persecution that came upon the church in Jerusalem resulted in giving a great impetus to the work of the gospel. Success had attended the ministry of the word in that place, and there was danger that the disciples would linger there too long, unmindful of the Saviour's commission to go to all the world. Forgetting that strength to resist evil is best gained by aggressive service, they began to think that they had no work so important as that of shielding the church in Jerusalem from the attacks of the enemy. Instead of educating the new converts to carry the gospel to those who had not heard it, they were in danger of taking a course that would lead all to be satisfied with what had been accomplished. To scatter His representatives abroad, where they could work for others, God permitted persecution to come upon them. Driven from Jerusalem, the believers “went everywhere preaching the word.”  AA 105

And who was it that took the message out? It wasn't the apostles, for in Acts 8:1 it says: "A great persecution broke out against the church at Jerusalem, and all except the apostles were scattered throughout Judea and Samaria."

Among those to whom the Saviour had given the commission, “Go ye therefore, and teach all nations” (Matthew 28:19), were many from the humbler walks of life—men and women who had learned to love their Lord and who had determined to follow His example of unselfish service. To these lowly ones, as well as to the disciples who had been with the Saviour during His earthly ministry, had been given a precious trust. They were to carry to the world the glad tidings of salvation through Christ. AA 105.3

When they were scattered by persecution they went forth filled with missionary zeal. They realized the responsibility of their mission. They knew that they held in their hands the bread of life for a famishing world; and they were constrained by the love of Christ to break this bread to all who were in need. The Lord wrought through them. Wherever they went, the sick were healed and the poor had the gospel preached unto them. 

It was those of the humbler walks of life that were crucial in taking the message out. This is represented by the first big name to really reach out to the non-Jews - Philip. But this isn't Philip the Apostle; this is Philip who was made one of the 7 deacons put in charge of feeding the people - "serve tables"

And in those days, when the number of the disciples was multiplied, there arose a murmuring of the Grecians against the Hebrews, because their widows were neglected in the daily ministration.

Then the twelve called the multitude of the disciples unto them, and said, "It is not reason that we should leave the word of God, and serve tables. Wherefore, brethren, look ye out among you seven men of honest report, full of the Holy Ghost and wisdom, whom we may appoint over this business. But we will give ourselves continually to prayer, and to the ministry of the word."

And the saying pleased the whole multitude: and they chose Stephen, a man full of faith and of the Holy Ghost, and Philip, and Prochorus, and Nicanor, and Timon, and Parmenas, and Nicolas a proselyte of Antioch: Whom they set before the apostles: and when they had prayed, they laid their hands on them.

Acts 6:1-6

It is this Philip the Evangelist, not the Apostle, who has great success with the Samaritans:

Philip, one of the seven deacons, was among those driven from Jerusalem. He “went down to the city of Samaria, and preached Christ unto them. And the people with one accord gave heed unto those things which Philip spake, hearing and seeing the miracles which he did. For unclean spirits ... came out of many that were possessed with them: and many taken with palsies, and that were lame, were healed. And there was great joy in that city.”  ...

Philip's work in Samaria was marked with great success, and, thus encouraged, he sent to Jerusalem for help. The apostles now perceived more fully the meaning of the words of Christ, “Ye shall be witnesses unto Me both in Jerusalem, and in all Judea, and in Samaria, and unto the uttermost part of the earth.” Acts 1:8. 

While Philip was still in Samaria, he was directed by a heavenly messenger to “go toward the south unto the way that goeth down from Jerusalem unto Gaza.... And he arose and went.” He did not question the call, nor did he hesitate to obey; for he had learned the lesson of conformity to God's will. 

“And, behold, a man of Ethiopia, a 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, was returning, and sitting in his chariot read Esaias the prophet.” This Ethiopian was a man of good standing and of wide influence. God saw that when converted he would give others the light he had received and would exert a strong influence in favor of the gospel. Angels of God were attending this seeker for light, and he was being drawn to the Saviour. By the ministration of the Holy Spirit the Lord brought him into touch with one who could lead him to the light. 

...

This Ethiopian represented a large class who need to be taught by such missionaries as Philip—men who will hear the voice of God and go where He sends them. There are many who are reading the Scriptures who cannot understand their true import. All over the world men and women are looking wistfully to heaven. Prayers and tears and inquiries go up from souls longing for light, for grace, for the Holy Spirit. Many are on the verge of the kingdom, waiting only to be gathered in. AA 109.1

An angel guided Philip to the one who was seeking for light and who was ready to receive the gospel, and today angels will guide the footsteps of those workers who will allow the Holy Spirit to sanctify their tongues and refine and ennoble their hearts.

AA 106-109

Let us be encouraged by this. Let us not forget to take the message to those who seem afar off. Let those who feel they don't know enough know that it is their humility and sincerity and reliance on God that precisely makes them a powerful witness in a way an intellectual isn't. May we be encouraged by this and remember that it wasn't a great apostle who first did this work to the Gentiles, but a humble deacon. Then later the Apostles got on board.

Philip's work in Samaria was marked with great success, and, thus encouraged, he sent to Jerusalem for help. The apostles now perceived more fully the meaning of the words of Christ, “Ye shall be witnesses unto Me both in Jerusalem, and in all Judea, and in Samaria, and unto the uttermost part of the earth.” Acts 1:8.