John Chrysostom

However it is not he who spoke thus, but what? "For he that is entered into his rest, he also hath ceased from his own works, as God did from His." As God ceased from His works, he says, so he that hath entered into His rest hath ceased. For since his discourse to them was concerning rest, and they were desirous to hear when this would be, he concluded the argument with this.

Homily on Hebrews 6 ↗

Theophylact of Ohrid

He explains in what sense he called such rest "a sabbath." Because, he says, we too rest from our works, just as God, having rested from His works after the creation of the world, called that day the Sabbath. For here there is much toil for the righteous as well, and struggle, and every kind of effort in virtue; but there, there is no care or moral striving, there is immeasurable delight in God. …

Commentary on Hebrews ↗

Oecumenius

In another way. "rested from his works, as God did from his own." As if, he rested. Since he has demonstrated that there is a third rest, and that some will enter into it, he comes to the conclusion and says: "From what has been said, it is certainly evident that there is another rest besides the aforementioned, and this is not for everyone, but dedicated to the people of God." Truly, the people of God are those who have believed in Him and keep His commandments.

The Pseudo-Oecumenian Catena on Hebrews ↗

Thomas Aquinas

Hence, he adds, For whoever enters God's rest also ceases from his works: because just as God worked six days and rested on the seventh, so by the six days the present time is signified, because it is a perfect number. Therefore, one who works perfectly, rests from his works on the seventh day, as God did from His; but not from all works, because there are certain works, for example, to see, to love and to praise: 'And they rested not day and night saying, Holy, holy, holy, Lord God Almighty' (Rev. …

Commentary on Hebrews ↗