John Calvin on Zephaniah 1:13

Zephaniah pursues the same subject — that God, after long forbearance, would punish his rebellious and obstinate people. Hence he says, that they were now delivered, even by God himself, into the hands of their enemies. They indeed knew that many were inimical to them; but they did not consider God’s judgment, as God himself elsewhere complains — that they did not regard the hand of him who smote them. Isaiah 9:13. Our Prophet, therefore, declares now that they were given up to destruction, and that their enemies would find no trouble nor difficulty in invading the land, since all places would be open to plunder. And he recites what is found in Leviticus 26:20; for the Prophets were interpreters of the law, and the only difference between Moses and them is, that they apply his general truth to their own time. The Prophet now pursues this course, as though he had said, that God had not in vain or to no purpose threatened this evil in his law; for the Jews would find by experience that this would really be the case, and that it had been truly said, that the fruit of the land, their habitations, and other comforts of life, would be transferred to others. It now follows —

Zephaniah 1:14

14. The great day of the Lord is near, it is near, and hasteth greatly, even the voice of the day of the Lord: the mighty man shall cry there bitterly.

14. Propinquus dies Jehovae magnus, propinquus et festinans valde; vox diei Jehovae amara (ut alii vertunt,) vociferabitur illic fortis (vel, amarum, aut, amare illic vociferabitur fortis; alii secus ditinguunt, Vox diei Jehovae amara vociferabitur, aut, amare; postea, illic fortis.)