Sant Balajit Singh, current lineage holder descended from Sant Thakar Singh, said something very wise: 

God is infinite. Any attempt to limit or define God is a mistake.

Kane Mantyla of Floatmatrix, had a similar thing to say:

once you think about something, you limit it and start thinking about it.

In this meditation, we are aiming for God realization. Of course “aiming” is a wrong word… you can’t hit the bullseye. Because if you did, you would be stuck at a particular place/idea, and that would be limiting God… a big no no.

So, you repeat the mantra but of course you are doing it with no idea what’s coming your way.

And that is one of the best things about this practice – it is dynamic and completely unpredictable.