If God is surpassingly dynamic and sovereign, then the initiative is always His. His is the ground of all being, the impetus before all action, the Alpha and Omega of all creation.
But what of our own free will? What of our ‘Yes’ to open the door to God? This idea of the divine initiative is called ‘grace.’ This means that even when we seem to take the lead, He enables us to do so. When He seems absent, He by His initiative chooses to be so. The interaction between God and the human is arranged so by His gracious will.
What I am describing relates first to all actions in the world, and then to the very special case of His saving acts toward us.
What does it mean that God requires us to ‘do what we can’? How does this relate to grace? (This was a famous maxim in the Middle Ages.)