And the two disciples heard him speak, and they followed Jesus.
All Commentaries on John 1:37 Go To John 1
Theophilus of Antioch
AD 184
Observe then, that it was upon those who followed Him, that our Lord turned His face and looked upon them. Unless you by your good works follow Him, you shall never be permitted to see His face, or enter into His dwelling.
And it was about the tenth hour. The Evangelist mentions the time of day purposely, as a hint both to teachers and learners, not to let time interfere with their work.