Paul experienced a sudden vision of a blinding light and a voice on the road to Damascus, but the multiple accounts recorded in the Book of Acts contain clear, direct contradictions regarding whether his companions also fell to the ground, and whether they actually heard the voice or saw the light.
The author of the fourth gospel is believed to be a Greek convert with limited knowledge of traditional Judaism, who frequently uses 'the Jews' as an antagonistic term over 60 times in the Gospel of John alone.
Yes, anyone can convert to Judaism. The formal process of conversion is called Giyyur. While Judaism is not a proselytizing religion and does not actively seek out converts, sincere individuals who study Jewish history, texts, and law, accept the commandments, and undergo ritual immersion (in a mikvah) are fully welcomed as Jews.
| 1. Sea parted and drowning Pharaoh attempts conversion | Quran 10:90 |