Trying to FIND a passage in the Law of One ...

[βαθμιαίος]

I associate it with this advice that Ra gave Jim:

99.5 ...We may note that the great forte of the scribe is summed in the inadequate sound vibration complex, power. The flow of power, just as the flow of love or wisdom, is enabled not by the chary conserver of its use but by the constant user. The physical manifestation of power being either constructive or destructive strenuous activity, the power-filled entity must needs exercise that manifestation. This entity experiences a distortion in the direction of an excess of stored energy. It is well to know the self and to guard and use those attributes which the self has provided for its learning and its service.

Basically, use it or lose it. And using it enables the flow, which is nice.