Then he (Moses) took the Book of the Covenant and read it in the hearing of the people. And they said, “All that the Lord has spoken we will do, and we will be obedient.” Exodus 24:7
That sounds like a group of fairly committed people. In fact, I think they believed the intent of their own words and didn't plan on falling short. In that moment the people of Israel wanted to follow God and stay under his authority. Sadly, history tells us that less than 40 days later they had failed miserably and suffered the consequences of their decisions.
On the surface it seems hard to believe that an entire group of people could shift their allegiance so quickly. Before we decide to judge the Hebrews too harshly perhaps we should examine our own life patterns first. How quickly we walk away from our commitments? How often do we make bold statements about our convictions and then abandon them in a matter of days? What life changing resolutions have we written down and then ignored once the shine of their newness wore off?
If we want to make positive declarations about what we will (or won't) do, we've got to have a corresponding action plan to make it stick or we're just making a lot of noise.