Jamieson, Fausset and Brown on John 4:21-24

21-24. Woman, &c.--Here are three weighty pieces of information: (1) The point raised will very soon cease to be of any moment, for a total change of dispensation is about to come over the Church. (2) The Samaritans are wrong, not only as to the place, but the whole grounds and nature of their worship, while in all these respects the truth lies with the Jews. (3) As God is a Spirit, so He both invites and demands a spiritual worship, and already all is in preparation for a spiritual economy, more in harmony with the true nature of acceptable service than the ceremonial worship by consecrated persons, place, and times, which God for a time has seen meet to keep up till fulness of the time should come.

neither in this mountain nor yet at Jerusalem--that is, exclusively (Mal 1:11; 1Ti 2:8).

worship the Father--She had talked simply of "worship"; our Lord brings up before her the great Object of all acceptable worship--"THE Father."