Exodus 17:14

Of Josue, and of all who shall govern after him, that they may remember to execute my decree of extermination, against these cruel Amalecites, who have first dared to oppose the progress of my dejected people. (Haydock) --- Moses mentions, that they particularly attacked the feeble and stragglers, (Deuteronomy xxv. 18,) though their army was very formidable, Judith iv. 13. Saul received an express order to destroy this nation; and he made such havoc among them, that they never rose again to any importance, and were confounded with the Idumeans, 1 Kings xv. 3. (Calmet)