Song of Solomon 4:2
Thy teeth are like a flock of sheep that are even shorn, which came up from the washing; whereof every one bear twins, and none is barren among them. Thy teeth are like a flock of sheep that are even shorn, which came up from the washing; whereof every one bear twins, and none is barren among them.
The verse belongs to a vivid, warm Oriental love poem formed as a dialogue between various parties. It is one of the one thousand and five songs or poems Solomon wrote. It is a poetical picture of Christ and His church, portraying His wonderful love, and its imagery belongs to that picture. It also shows her love in response to Him, though often wanting in faithfulness and constancy. It is to be read alone with God while keeping that picture in mind.
In its literal image, a flock in which none is barren expresses that every one bears twins. The description of none being barren illustrates that sin is fruitful, with sins linked together so that each sin fosters the repetition and growth of further sin. Every wrong act makes repeating it easier, and small sins can lead to greater ones, so sin perpetuates and increases itself.