The gospel connection will revolve around the LORD, for the first time in the plagues, making a distinction between His people and Pharaoh’s people:
The LORD’s people will experience redemption while Pharaoh’s people experience destruction.
What makes the LORD’s people so special? Nothing they’ve done. Rather, they are “special” because the LORD has graciously chosen them and set them apart as his treasured possession.
This is true for the Christian as well. What makes the Christian so special? Nothing they’ve done. Rather, they are “special” because the LORD has graciously chosen them and set them apart, in Christ, as his treasured possession.
The Christian has been graciously set apart by the LORD, in order to experience the LORD’s redemption instead of the destruction he deserves.