I think that what this means is that God takes sole responsibility for the performance of his word
Assurance
The Prince Of Egypt (VII) – All is Well that Ends… Well?
The aftermath of "The Exodus" was a genesis of something of a vicious cycle for Moses and the Israelis. Rebellion from the people of Israel. Laws. More rebellion. More laws. Until the “Laws of Moses” grew to about 600+ rules and penal codes that the people of Israel could never hope to keep, no matter how hard they tried.
Finer thoughts
Fix your eyes on what's eternal Beyond the reach There you will find me
In Plain Sight 