Matthew Poole and continuators on John 4:35

35 Say not ye, There are yet four Months▪ and then cometh Harvest : Behold▪ I say unto you, lift up your Eyes, and look on the Fields , for they are white already to Harvest .

There was in those Countreys but four Months space betwixt Seed-time and Harvest: Yet they fed themselves (as soon as they had sown) with the expectation of it

My Harvest, saith our Saviour, is the gaining of Souls for my Father; look yonder what a Troop of the Citizens of Sichem are coming to me, upon my Revelation of my self to the Woman of Samaria: I have but just sown my Seed

and the Fields are white to this Spiritual Harvest, Mat. 9.37. In the judgment of the best Interpreters, our Saviour in this Verse useth a comparison, and passeth from his Similitude used in the former part of the Verse, fetched from a Worldly Harvest, to discourse of that Spiritual Harvest, which he by and by Reaped of the Citizens of Sichem coming to him; it is of that he saith, that the Fields were already white, by which (as will appear from the following Verses) he quickneth his Disciples to put in their Sickles. Some Critical Authors, understanding both the former and latter part of the Text of a Worldly Harvest, have used their Wits to determine how the Fields should be white to Harvest four Months before it came; but the most and best Interpreters Interpret the latter part, of a Spiritual Harvest, and that will be also justified by what followeth.

Marginal references: Luke 10.2.