Augustine of Hippo

In expounding holy Scriptures, I am, so to speak, now breaking bread for you. If you hunger to receive it, your heart will sing out with the fullness of praise. And if you are thus made rich in your banquet, why would you then be niggardly in good works and deeds of mercy? What I am distributing to you is not my own. What you feast upon, I also feast upon.

Sermons On New Testament Lessons 45.1 ↗

Bede

And he commanded the crowd to recline on the ground. Earlier, during the feeding of the five loaves, the crowd reclined on the green grass; now, when they are to be fed with seven loaves, they are commanded to recline on the ground, because through the Scripture of the law we are ordered to tread and suppress the desires of the flesh. For all flesh is grass, and all its glory like the flower of grass (I Peter I). However, in the New Testament, we are commanded to forsake even the very land and temporal goods. …

On the Gospel of Mark ↗

Remigius of Rheims

And he commanded the people to sit down on the ground. In the former feeding they lay down on grass, in this one on the ground. And he took the seven loaves, and gave thanks, and brake. In giving thanks, He has left us an example, that for all gifts conferred on us from heaven we should return thanks to Him. And it is to be remarked, that our Lord did not give the bread to the people, but to His disciples, and the disciples to the people; and gave to his disciples to set before them; and they did set them before the people.

Catena Aurea by Aquinas ↗