Answer: Philip continued preaching the Gospel, (verse
40).
MORE INFORMATION AND/OR OTHER SCRIPTURE REFERENCES:
When Philip had baptized the eunuch, and they came up out of
the water, the Spirit of the Lord suddenly took Philip away, and he
appeared at Azotus (a seacoast town) and traveled northward,
preaching in cities along the way (e.g., Lydda and Joppa) until he
reached Caesarea. Philip was constantly preaching the
Gospel--spreading the Good News of Christ. Caesarea may
have been Philip's home. When we read about him again
in Acts 21:8, he is in that city.
Acts 21:8-9: "Leaving the next day,
we reached Caesarea and stayed at the house of Philip the
evangelist, one of the Seven. He had four unmarried daughters
who prophesied."
Notice that in the above verses, Philip is still
"Philip the EVANGELIST." He is still preaching
the Gospel--the Good News of Jesus Christ.