At the conclusion of the Lord’s Supper, just before Jesus and the disciples went out to the Mount of Olives where He would be betrayed and arrested, they sang a hymn (Mark 14:26 ), which commentators agree was the Hallel (Psalms 113-118). When Paul and Silas were unjustly thrown into jail in Philippi, with their backs laid open from being beaten and their feet in the stocks, they sang hymns of praise to God (Acts 16:25 ).