The next day appears to be the day after John the Baptist identified Jesus as the Lamb of God and two of his disciples, one of whom was Andrew, started following Jesus. John was evidently baptizing in Perea and Judea around the Jordan River (cf. Matthew 3:1; Matthew 3:5-6; Mark 1:5). [1] Now someone-his identity is absent in the Greek text-purposed to head north into Galilee. Probably this person was Andrew rather than Jesus. There are two reasons for this conclusion. Everyone else in this chapter who came to Jesus came on the invitation of someone other than Jesus. Moreover John seems to have been stressing the importance of witnessing for Jesus. [source][source][source]
Andrew found Philip (a Greek name meaning "lover of horses") somewhere along the way or, most likely, in Galilee. Philip was from Bethsaida Julius in the region of Galilee ( John 12:21). Having come to Jesus on Andrew"s invitation, Philip accepted Jesus" invitation to follow Him. Andrew and Peter had also lived in Bethsaida evidently before they moved to Capernaum ( Mark 1:21; Mark 1:29). These men were all undoubtedly acquaintances, if not friends, before they became Jesus" followers. [source][source][source]