John 4:16 - Matthew Poole's English Annotations on the Holy Bible

Not that Christ did not know, what she afterward confessed, that she lived in whoredom, and had no legitimate husband; but he said this probably to check her petulancy, and mocking at what he spake about the living water, and to bring her to a sense of her sin, that she might be more fit to receive the glad tidings of a Saviour, which he was about to publish to her; and this seems rather to be our Saviour's design in bidding her go call her husband, than (as some of the ancients thought) that he might better instruct her, or avoid any scandal to himself, by a longer private discourse with a woman alone, who was of no better reputation.