John Calvin Commentary Isaiah 60:13

"The glory of Lebanon shall come unto thee, the fir-tree, the pine, and the box-tree together, to beautify the place of my sanctuary; and I will make the place of my feet glorious." — Isaiah 60:13 (ASV)

The glory of Lebanon. Isaiah again employs the metaphor he previously used, when he compared the Church of God to a building or a city. He enumerates those things that were necessary for building, such as “the fir-tree, the pine, and the box-tree,” which grew in Lebanon, a forest that, as we know, abounded with excellent trees.

For the beauty of the place of my holiness. He means that all that is excellent and beautiful in Lebanon will be carried into the Church. However, we must believe that these figures contain a symbolic reference to the spiritual worship of God; for the Lord adorns his Church with the title of a sanctuary, because he dwells in the midst of it. Yet he always alludes to the temple, thereby adapting himself to the era and common custom. Thus he presents to us the pattern of the temple that stood at Jerusalem, so that under its image we may contemplate the spiritual temple (Ephesians 2:21), of which we are the living stones and the living substance (1 Peter 2:5).

For I will glorify the place of my feet. By “the place of his feet,” he means that he dwells in the temple in such a way that his majesty is not confined within it (for he is not limited to such a narrow place), and therefore his feet only, what might be called the smallest part, are there.

This is so that we may ascend to heaven and not fix our entire attention on those outward signs by which we are instructed according to our capacity. Thus also in the Psalm,

Worship the footstool of his feet, for it is holy (Psalms 99:5).

And again,

We will worship in the place where his feet stood (Psalms 132:7).

Not that God’s essence is divided into parts above and below, but because by such means he lifts up his servants, as it were, from the feet to the head.