Holding back
Cain’s first sin was holding back. Do we hold anything back from Yahweh? Do we hold on to a part of us for ourselves instead of surrendering all to the will of Yahweh?
We should not aspire to be great, we should aspire to be greatly used by Yahweh.
No doubt, Yahweh can and will use even people who are not submitted to His will for his good purposes. We see examples of this in Pharaoh and Nebuchadnezzar. However, how much better it is to be used as a willing vessel!
I don’t want to hold anything back.