John 4:16

So far the woman thought only of her physical need for water and rest. Jesus now took the conversation in a different direction to help her realize that she had greater needs than these that He could meet (cf. John 2:24-25). Jesus’ instruction that she call her husband was proper because if He was really going to give her something valuable her husband should have been present. This was necessary to avoid misunderstanding about the reason for the gift and especially in view of Samaritan Jewish tensions.