John 1:43-44 — The day following Jesus would go forth into Galilee, and findeth Philip, and saith unto him, Follow me.
Now Philip was of Bethsaida, the city of Andrew and Peter.
Philip = lover of horses
The commentaries all stress that Philip is an example of those who are saved because God calls them directly without the involvement of another person. Today, it would be someone saved by reading the Bible. I'm not sure how significant this is, but it is a common application.
Whatever the circumstances, everyone who trusts Christ does so after He gives the grace that enables us to do so.