To approach that energy he needed to follow a basic rhythm that he was unable to follow all the time. Every spiritual energy has a different kind of rhythm and to approach them you need to follow that rhythm. Every Warrior from the moment able to absorb the Spiritual energy could easily follow the rhythm and because of this, nobody has any kind of problem while approaching The Spiritual energy.
But every different spiritual energy naturally has a different kind of rhythm. Even though the main property of the rhythm could be the same, naturally it became completely different in other parts.