I believe; therefore, I say that the following sentences all mean the same thing:
Just let the River flow!
Rest in the Sabbath.
Don’t be afraid; just believe.
Be still and know that I am God.
Freely you have received; freely give.
In other words, when he breathed into man it was up to man to breathe back out. When he loved man, man needed to love. When he gave material goods to man, man needed to give. Everything depends on keeping the flow going, and the flow is God.
Not giving stops the flow. Not trusting stops the flow.
Guilt stops the flow. (One could say guilt dams the River and damns the sinner.)