John Wesley on Leviticus 21:13

In her virginity - Or, a virgin, partly because as he was a type of Christ, so his wife was a type of the church, which is compared to a virgin, and partly for greater caution and assurance that his wife was not a defiled or deflowered person. Most of these things are forbidden to all the priests; and here to the high - priest, to shew that he also, and he especially is obliged to the same cautions.