Your teeth are like a flock of sheep that are even shorn, which came up from the washing; every one of which bears twins, and none is barren among them.
All Commentaries on Song of Songs 4:2 Go To Song of Songs 4
Aquinas Study Bible
AD 2017
teeth: just as the hairs symbolize the weaker members among God's people, the teeth signify the stronger ones.
twins: that is because they pass on to others the great qualities that they have. (St. Bede)