There is reason to believe that most of those present on that occasion became Christians. Paul refers to them as “500 brothers ” in his letter to the Corinthians.
ثَمَّةَ سَبَبٌ لِلِٱعْتِقَادِ أَنَّ مُعْظَمَ ٱلْحَاضِرِينَ فِي تِلْكَ ٱلْمُنَاسَبَةِ صَارُوا مَسِيحِيِّينَ .‏