Board Thread:Manga/@comment-26495049-20161201065442/@comment-30632294-20161202030559

I actually really disagree. There is a far simpler explanation.

The reason Grisha had to pass on his power and the coordinate was to hide it's location. Rod Reiss escaped the chapel with his life, but he also escaped with the knowledge that Grisha was from outside the wall, a titan shifter, and the current holder of the coordinate. Grisha knew that it would be a matter of days before he was tracked down, brought to the chamber and consumed by the next in the line of Kings. Now, he had no way of knowing that Rod was too cowardly to take the titan serum himself, and who knows, he might have summoned the courage to do it in that moment due to the importance of the coordinate BUT Grisha would have known that his days inside the wall were numbered.

So he hid his power.

I also think this is why the Owl passes the power on to Grisha in the first place. He revealed himself to the Marlayans in order to save Grisha. It doesn't take too much investigation to realize that a titan had destoryed the boat. He too, knew his days were numbered when he revealed himself. He clearly sees something in Grisha, something that will help them win the war. So he sacrifices himself. If he did not pass on the power and hide it in Grisha, the power of the titan would have been captured by Marley and made it so they controlled all 8 titan powers outside the wall. He knew that could not happen.