Andrew's simple act of bringing his brother Simon to Jesus resulted…

He first findeth his own brother Simon, and saith unto him, We have found the Messias, which is, being interpreted, the Christ.

John 1:41 (KJV)

Again the next day after John stood, and two of his disciples; And looking upon Jesus as he walked, he saith, Behold the Lamb of God! And the two disciples heard him speak, and they followed Jesus.

John 1:35 (KJV)

He first findeth his own brother Simon, and saith unto him, We have found the Messias, which is, being interpreted, the Christ. And he brought him to Jesus.

John 1:41 (KJV)

Now Philip was of Bethsaida, the city of Andrew and Peter.

John 1:44 (KJV)

There is a lad here, which hath five barley loaves, and two small fishes: but what are they among so many?

John 6:9 (KJV)

And there were certain Greeks among them that came up to worship at the feast: The same came therefore to Philip, which was of Bethsaida of Galilee, and desired him, saying, Sir, we would see Jesus. Philip cometh and telleth Andrew: and again Andrew and Philip tell Jesus.

John 12:20 (KJV)