So many of us are so prone to getting caught up in what we do (activity) that it adversely taints who we think we are (identity). But the gospel informs a different way. By focusing first on who God is and what he's done, we're able to see who we really are in Christ. When we truly submit to the realities of the gospel, then this new identity orients what we do!
God, in his glorious plan and love for his people, reveals all the mighty plans he has for them as he brings them out of Egypt. Exodus 5:22-6:8 is often referred to as the Table of Contents for the entire OT. Specifically looking at Exodus 6:6-8 we see this amazing pattern evolve:
First, God’s identity informs or enables his activity of delivering his people out of Egypt
Secondly, he reaffirms his people’s identity → “I will make you my people...”
Then, he reveals to them their future activity → to inherit the land (back to creation, Abraham, covenant, etc.)
This sermon by Daniel Huskey from January 8, 2017 outlines just that.