Around 612 BC, the minor prophet Nahum prophesied against Nineveh, the capital of the Assyrian empire. Assyria had conquered and cruelly ruled much of the Middle East for 300 years, and in 622 conquered the northern Kingdom of Israel and deported its people. The Book of Nahum contains prophecies of God’s judgment on Nineveh, which fell to the Medes and Babylonians shortly after they were uttered.
N.B. The Martyrologium Romanum (Vatican Press, 2004), the Church’s official list of holy men and women, lists the saints of the Old Law alongside those of the New.