I have heard the reproach of Moab, and the revilings of the children of Ammon, whereby they have I have heard the reproach of Moab, and the revilings of the children of Ammon, whereby they have reproached my people, and magnified themselves against their border.
I have heard the reproach of Moab - a seasonable consolation to Judah, when wantonly assailed by Moab and Ammon with impunity: God saith, "I have heard" it all, though I might seem to men not to have observed it because I did not immediately inflict punishment.
Whereby they have ... magnified themselves against their border - acted haughtily, invading the territory of Judah (Jeremiah 48:29), and seizing on the territory of the ten tribes of Israel (especially the land of Gad, east of Jordan), after these had been carried captive into Assyria, as if Ammon, and not Israel's own brother Judah, were the 'heir' of the vacated territory (Jeremiah 49:1: cf. Zephaniah 2:10; Psalms 35:26; Obadiah 1:12, "spoken proudly;" margin, magnified thy mouth).