John 16:21

A woman when she is in travail hath sorrow, because her hour is come: but when she is delivered of the child, she remembereth no more the anguish, for the joy that a man is born into the world.

The analogy here strongly resembles some of the parables found in the synoptics. Fittingly, Jesus the Seed of Woman here referred to himself as a woman in the pangs of childbirth, his apostles also being identified with him as sharing in his sufferings.

Her hour is come ... strongly reminds the student of Jesus' frequent references to his own "hour." The child is the church or kingdom of God, which was in fact delivered by the agonies of death through which the Lord passed. The woman's remembering no more the anguish and rejoicing over the child correspond to the rejoicing that followed the Lord's resurrection. Most remarkably, Jesus never lost sight of the joy of saving sinners, the same being the motivation that sustained him upon the cross itself (Hebrews 12:2). These applications of the metaphor appear in the Lord's own explanation in the next verse.