Jesus answered and said unto her,
If you knew the gift of God, and who it is that said to you, Give me to drink; you would have asked of him, and he would have given you living water.
All Commentaries on John 4:10 Go To John 4
Hippolytus of Rome
AD 235
Concerning which, he says, the Saviour has declared, "If thou knewest who it is that asks, thou wouldst have asked from Him, and He would have given you to drink living, bubbling water."