World Wide Study Bible
a Bible passage
50. But … a baptism, &c.—clearly, His own bloody baptism, first to take place.
how … straitened—not, "how do I long for its accomplishment," as many understand it, thus making it but a repetition of Lu 12:49; but "what a pressure of spirit is upon Me."
till it be accomplished—till it be over. Before a promiscuous audience, such obscure language was fit on a theme like this; but oh, what surges of mysterious emotion in the view of what was now so near at hand does it reveal!