On the next day, he was determined to go out into Galilee, and he found Philip. Jesus said to him, "Follow me."
Whereas Andrew and John found the Lord, the case of Philip was different in that the Lord found him; but the genuine nature of his discipleship was evidenced at once by his mission which resulted in the enrollment of Nathaniel in the sacred fellowship.  Only Philip and Andrew of the Twelve had Greek names, which might explain the approach of the Greeks through these disciples (John 12:21).  Lockyer noted that Philip was apparently slow to apprehend spiritual truth.