2 Maccabees 12:36-38

New Revised Standard Version, Anglicised Catholic Edition

³⁶ As Esdris and his men had been fighting for a long time and were weary, Judas called upon the Lord to show himself their ally and leader in the battle. ³⁷ In the language of their ancestors he raised the battle-cry, with hymns; then he charged against Gorgias’s troops when they were not expecting it, and put them to flight.

Prayers for Those Killed in Battle

³⁸ Then Judas assembled his army and went to the city of Adullam. As the seventh day was coming on, they purified themselves according to the custom, and kept the sabbath there.