What does being an enemy of God mean in the context of this sermon?

The sermon highlights that Mephibosheth was considered an enemy of King David because of his lineage. In a similar way, all humans are born in enmity against God due to original sin. The Scriptures teach that the carnal mind is enmity against God (Romans 8:7). Just as Mephibosheth feared for his life, mankind, in a state of sin, stands in fear of God’s justice. However, through grace and the sovereign choice of God's love, we can be reconciled to God, moving from enmity to acceptance, much like Mephibosheth moved from a fearful outcast to a beloved son at David's table.