John Trapp on Joel 3:15

Verſe 15. The Sun and the Moon ſhall be darkened] he ſets this note, Signes which ſhall goe before the laſt judgement, Mat. 24.29. Luk. 21.25. See the Note above on chap. 2.13. The Prophets, by ſuch formes of ſpeech, uſe to decipher greateſt calamities when all things look dark: as it fareth alſo with them that are under ſpiritual deſertion Eſay. 50.10. who yet are exhorted there to truſt in the name of the Lord, and ſtay upon their God: to caſt the anchour of hope, as Paul and his company did in the ſhipwrack Act. 27.20. when they ſaw neither Sun nor moon for many dayes together, and no ſmall tempeſt lay upon them: all hope that they ſhould be ſaved, being taken away.