'Fiftieth' in the Bible

In the fiftieth year of Azariah king of Judah Pekahiah the son of Menahem began to reign over Israel in Samaria, [and reigned] two years.

In the two and fiftieth year of Azariah king of Judah Pekah the son of Remaliah began to reign over Israel in Samaria, [and reigned] twenty years.