1. The basis of our standing before God is the finished work of Christ, not our ability to bear children.
2. We have confidence that God loves us, even though there are still difficult circumstances in our lives.
3. It breaks the power of sin in our lives (idolatry, envy, bitterness, etc.), both in providing a means of forgiveness for the sin in our lives and the power to not sin.
4. It gives means of dealing with people sinning against us, such as by saying hurtful things, by giving reason to forgive and assurance that justice will be served.
5. It secures our adoption, giving us family and identity.
6. We can look forward to a day when there will be no more tears.

Related:

David Matthis recently preached The Gospel for Bethlehem.

Desiring God has a number of sermons by Pastor John on the topic of the Gospel.