A lifeform's body composition, mind, spirit, and soul were four different levels of power. They were mutually independent but shared a connection.
The stronger a lifeform was, the more important their soul was to them.
The soul and spirit were closely related to the power of comprehension. The increase in spiritual energy made it easier for a lifeform to gain comprehension. The improvement of the soul would increase the level of comprehension of the lifeform.
Rememberling's divine kingdom ability, Soul Leaping Tide Spring, could be said to be the best ability for Creators to advance. It was comparable to the so-called 'opportunities' mentioned by these Creators.
All the Creators who received Soul Leaping Tide Spring's cleansing found it easier to enhance their abilities. In addition to these Creators, entities like the Hundred Questions Beast army were also able to make progress.