Job 16:21 (KJV) says, "O that one might plead for a man with God, as a man pleadeth for his neighbour!"

This verse comes from the book of Job in the Old Testament, which tells the story of a man who faces significant suffering and hardship. Job's friends believe that he must have sinned to deserve his misfortune, but Job maintains his innocence and refuses to curse God. The verse is part of Job's lamentation, as he longs for an intercessor to plead his case before God.

The verse expresses Job's desperation for someone to intervene on his behalf before God. He wishes for an advocate or mediator who would speak on his behalf just as a man would plead for his neighbor in court. Job is seeking someone who will take up his cause and argue his innocence before God, who he feels has turned against him.

One of the main themes of this verse is the idea of intercession and advocacy before God. Job longs for someone to come forward as his representative and speak on his behalf. This reflects Job's longing for justice and vindication, as he feels he has been unfairly treated by God. It also shows the importance of having a mediator who can bridge the gap between God and humanity.

Another theme in this verse is the concept of empathy and compassion. Job desires someone who will have compassion for him and take up his cause just as a person would do for their neighbor. This speaks to the human need for understanding and support in times of trouble, and the idea that we should show compassion and empathy to others in their time of need.

The context of this verse is important in understanding its deeper meaning. Job is in the midst of his suffering, and he is feeling abandoned and alone. He is surrounded by friends who accuse him of wrongdoing and offer little comfort or support. In this verse, Job is crying out for someone who will stand up for him and speak up on his behalf.

The symbolism in this verse is powerful. It speaks to the universal experience of feeling isolated and abandoned, as well as the longing for an advocate or savior. It also highlights the need for empathy and compassion in human relationships, and the importance of standing up for others in their time of need.

Overall, Job 16:21 is a poignant expression of Job's longing for someone to plead his case before God. It reflects themes of intercession, empathy, and the universal human need for support and understanding. In the larger context of the book of Job, this verse is a powerful reminder of the importance of standing up for others and offering compassion and support in times of suffering.