[5-8]: An allusion to 2 Pet. III.12, which describes Dei diei per quam caeli ardentes solventur et elementa ignis ardore tabescent ‘[the coming] of the day of the Lord, by which the heavens being on fire shall be dissolved, and the elements shall melt with the burning heat of fire’. Cf. the liturgical sequence Dies irae: Dies irae, dies illa / solvet saeclum in favilla ‘On the day of wrath, that day will the whole world be reduced to embers’ (AH 54, 269).