The tying of Isaac, when Abraham, who is the right line, which is above reason, tied the left line, which is the mind that criticizes everything, it gave him a general picture of the situation he was in. He left all the “left” and took upon himself the quality of “right,” which is above reason. By this he was later rewarded with the middle line.
That is, there is a difference between receiving the right line before he sees the left line, to a state where he renews the right line after he has seen the state of the left. “Right,” which is above reason, is called “devotion,” since he cancels all the reason he acquired from the left line and goes above reason, and then he is rewarded with the middle line.