Gregory the Great, on 1Sam 7:12

“And Samuel took a stone, and laid it between Masphath and Sen: and he called the place, the Stone of help. And he said: Thus far the Lord hath helped us.”

“22. In sacred Scripture, a stone signifies our Lord and Redeemer. A single stone is taken up by Samuel when the strength of the Redeemer is uniquely proclaimed by the preacher of Holy Church. This stone is indeed set up between Mizpah and Sen, because at the departure of life it protects the elect and crushes the reprobate. For Sen means "shaking off." The reprobate have been shaken off, that is, separated from the fellowship of the faithful. Therefore, while the Philistines are said to have been struck down all the way to the place below Beth-car, the stone is declared to have been set up between Sen and Mizpah: because when God's elect receive the trophy of their victory at the end, they are separated from the company of the wicked by the judgment of the Redeemer. But now, like wheat and chaff together on the threshing floor, we are mixed together; yet when we are brought to the end of life, the elect are divided from the reprobate by the Lord's power, and they have, as it were, a stone placed between them, since the reprobate bear the weight of the Redeemer in the judgment of their condemnation, while the elect hold the palms of eternal glory in his strength. By Sen, evil spirits can also be designated. For they have been shaken off, because they were cast out from the heavenly sanctuary through pride. And because they now wage war against us in this life, fittingly when the time of our victory is declared, the stone is said to be placed between us and them: because when we receive the rewards of our warfare, their battles are never again renewed against us. Moreover, Samuel places this stone in their midst, because the teacher of Holy Church shows us the goodness of our Redeemer. And because everything that is accomplished prosperously by us in all our life is ascribed to divine grace, the stone that is set in the midst is fittingly called by him the Stone of Help. For he himself is the Stone of Help; if he were unwilling to come to our aid, we could be conquered but could never conquer. Of this stone, now placed in their midst, it is said: "Thus far the Lord has helped us," because his protection follows his elect even to the time of eternal recompense. And because, as we have said, once we have been received into eternal rest, no battles are stirred up by our vanquished enemies...”

Imported from an open dataset — not yet checked against the printed edition.