Alcuin of York — on Rev 8:1 (COMMENTARY ON REVELATION)

“And when he had opened the seventh seal, there was silence in heaven, as it were for half an hour. Heaven, as we have often said, means the Church, which produces, as it were, silence for God when, through some of its members, it departs from the abundance of material things to seek the retreat of inner contemplation; but because this silence cannot be perfect in this life, it is said to have lasted as it were for half an hour. Note also that he ended the recapitulation where he said, After this I saw a great multitude, [Rev. 7:9] and now he concludes the narration with the seventh seal.”