'They're' in the Bible

Tobiah the Ammonite stood to the side, commenting, "If a fox were to jump onto what they're building, it would collapse their stone wall!"

Later I visited Delaiah's son Shemaiah, a grandson of Mehetabel, who was confined at home. He kept urging me, "Let's meet together at the house of God, within the Temple, and take refuge there, because they're coming to kill you. In fact, they're coming at night to kill you!"