'Stead' in the Bible

For seven days the one of his sons who is priest in his stead shall put them on when he enters the tent of meeting to minister in the holy place.

Then the inhabitants of Jerusalem made Ahaziah, his youngest son, king in his place, for the band of men who came with the Arabs to the camp had slain all the older sons. So Ahaziah the son of Jehoram king of Judah began to reign.