The Extent of God's Self-Sufficiency

You posted a line of reasoning that is deliciously compelling:

• Yahweh is indeed perfect so has no requirement for us to ask for his forgiveness. Yet he still wants us to.
• He also has no requirement for a compensating transaction – a sacrifice; he has no requirements for anything.
• However, we need to accept that a sacrifice (Jesus) and His forgiveness are necessary.
• Therefore there must be something of benefit to us (not God) in recognizing that we need His forgiveness for our transgressions and that we need to accept Grace from Him.
• God wants us to benefit from this "something" so places a requirement upon us to recognize this and comply.

Beautiful! You've placed your finger upon a tension within the Christian faith -- on the one hand, God is self-sufficient and self-sustaining, requiring absolutely nothing from anyone. And yet he has imposed a requirement for forgiveness -- a sacrifice (Jesus).

Why?

To answer this is to give a summation of pretty much the sweep of Christian theology as I understand it. (And admittedly, my understanding is limited ... very limited.) As I drink another (several) cups of coffee, let me ponder a proper response.

The answer may be "42." We'll see. :-)