When he began to reign, Saul was the son of one year, and he reigned over Israel for two years
Other versions
King James Version
Saul reigned one year; and when he had reigned two years over Israel, English Standard Version
Saul was... years old when he began to reign, and he reigned... and two years over Israel.New International Version
Saul was thirty years old when he became king, and he reigned over Israel forty- two years.