Every valley shall be filled, and every mountain and hill shall be brought low; and the crooked shall be made straight, and the rough ways shall be made smooth;
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Cornelius a Lapide
AD 1637
Every valley shall be filled, and every mountain and hill shall be bought low; and the crooked shall be made straight, and the rough ways shall be made smooth. S. Gregory (Hom. xx. In Evangelia), S. Augustine, S. Chrysostom, Bede, and others interpret these words as meaning, Every one that exalteth himself shall be humbled, and he that humbleth himself shall be exalted, as Christ said. This, however, is a discourse in which John exhorts his hearers to a change of life and conversation, as though he said, 0 ye Jews, prepare the way for Christ, your Messiah, now about to come to you. Wherefore, "Every valley shall be filled," i.e, let it be filled up, "and every mountain and hill shall be brought low," i.e, let it be brought low, "and the crooked," i.e, difficult ways, "shall be," i.e, let them be made, "into straight," &c. In other words, smooth all the ways for Christ, your King, Who cometh, as is wont to be done for kings that are about to enter upon their kingdoms, so that the rough ...
Every valley If these words, in one sense, were a prediction of the deliverance of the Israelites from their captivity, (Isaias xl. 3.) and an admonition to level the roads for those that were to return, they also signified the redemption of mankind from the slavery of sin; and that all obstacles, which retarded this benefit, should be removed, and also that the proud should be depressed, and the humble receive graces. (Witham)