The disciples before they become disciples/apostles all had someone point them to Jesus. And then the desire within them to know more made is so that they sought out Jesus personally and met him. Then the Word took root in their lives.
But it began with John the Baptist saying to the crowd of people, “Look, the Lamb of God who takes away the sin of the world!…I have seen and I testify that this is the Son of God” (Jn 1:29,34). And while the crowd all heard this, we don’t see much movement toward Jesus.
It was the next day when John was there again with two of his disciples that again he said, “Look, the Lamb of God!” (v. 36) that the two disciples began to follow Jesus. Not only did they follow him but once they spent the day with him, they invited others. Well, at least Andrew, one of the two disciples did. We don’t know about if the other invited anyone.
But Andrew invited his brother Simon. It was one of the first thing Andrew did. And he brought Simon to Jesus to hear for himself.
Then it appears that Jesus himself went and found Philip. Then Philip found Nathanael and introduced him to Jesus, testifying that he was the one written about in the Law and Prophets.
I’m reminded that this is the way of evangelism. We testify about who Jesus is and invite others to him. Some will respond to that testimony and others will not. Where were the others in John the Baptist’s crowd? We really don’t know.
But some will respond to what we say and testify about in Jesus, and some will not. Those who respond will seek Jesus out further, and Jesus will meet them.