Intercession that Didn't Happen

We know that salvation can be attributed to the intercession of Christ. Heb. 7:25 tells us that "He is able also to save them to the uttermost that come unto God by him, seeing he ever liveth to make intercession for them." And yet in our text we see a prayer that Christ could have prayed but didn't and wouldn't. In our remembrance of Christ we focus on why it was that Christ wouldn't pray for 12 legions of angels to come and deliver Him.