Jamieson, Fausset and Brown on Matthew 20:8

8. So when even was come--that is, the reckoning time between masters and laborers (see De 24:15); pointing to the day of final account.

the lord of the vineyard saith unto his steward--answering to Christ Himself, represented "as a Son over His own house" (He 3:6; see Mt 11:27; Joh 3:35; 5:27).

Call the labourers and give them their hire, beginning from the last unto the first--Remarkable direction this--last hired, first paid.