John Calvin Commentary Isaiah 63:14

"As the cattle that go down into the valley, the Spirit of Jehovah caused them to rest; so didst thou lead thy people, to make thyself a glorious name." — Isaiah 63:14 (ASV)

As a beast into a plain. Here, instead of “desert,” he uses the word “plain;” and the same meaning is drawn from his statement that “the people walked through the depths without stumbling, as horses are accustomed to do in the desert.” In short, he informs them that the Red Sea was no obstacle to the people marching through the midst of the depths, as if they were walking on level ground.

A glorious name. This is in the same sense that he previously called it “an everlasting name.” The people now argue with God that if he once wished to obtain “a glorious name,” he must not now abandon all concern for it; otherwise, the remembrance of the benefits which he previously bestowed on the fathers will be entirely blotted out.