He had four unmarried daughters who prophesied.
9. Four daughters. This is added for the commendation of Philip, not only that we might know that his house was well ordered, but also that it was famous and excellent through the blessing of God. For, assuredly, it was no small gift to have four daughters all endowed with the spirit of prophecy.
Philip the evangelist opened his house and welcomed Paul and the whole company without hesitation. Notice how he rose from deacon, serving tables, to evangelist planting churches through faithfulness, that is how God promotes His servants, not by seeking place but by doing present work well.
AI summary
Commenting on Acts 21:8-14
And the same man had four daughters,.... So that he was a married man, which may be observed against the Papists, who forbid marriage to ecclesiastics: and they were, virgins: not under any vow of virginity, but they had not as yet changed their state of life, and were pure and incorrupt: which did prophesy; not explain and interpret Scripture, or preach in public assemblies...