Jamieson, Fausset and Brown on Luke 9:51

Lu 9:51-56. The Period of His Assumption Approaching Christ Takes His Last Leave of Galilee--The Samaritans Refuse to Receive Him.

51. the time was come--rather, "the days were being fulfilled," or approaching their fulfilment.

that he should be received up--"of His assumption," meaning His exaltation to the Father; a sublime expression, taking the sweep of His whole career, as if at one bound He was about to vault into glory. The work of Christ in the flesh is here divided into two great stages; all that preceded this belonging to the one, and all that follows it to the other. During the one, He formally "came to His own," and "would have gathered them"; during the other, the awful consequences of "His own receiving Him not" rapidly revealed themselves.

he steadfastly set his face--the "He" here is emphatic--"He Himself then." See His own prophetic language, "I have set my face like a flint" (Is 50:7).

go to Jerusalem--as His goal, but including His preparatory visits to it at the feasts of tabernacles and of dedication (Joh 7:2, 10; 10:22, 23), and all the intermediate movements and events.