Psalm 78:19 - Yea, they spake against God; they said, Can God furnish a table in the wilderness?
This verse is at the beginning of a lengthy Psalm relating Israel's notorious history from Egypt to their dividing of the Promised Land. The sad hallmark of this time period is that often they did not deal truly with God. They were a fickle, insincere people.
There are many ways a man can speak against God. Taking God's name in vain which is the most recognizable form of speaking against God is commonly accepted and passed by without hardly a thought. It should come as no surprise that more subtle ways of speaking against God are not even recognized as such. This is why the verse before us is so compelling. It reminds us of how susceptible we are to speaking against God.
If we are not careful our fallen minds will create a dichotomy where one does not exist. Two things are equated that are worthy of more than just a passing notice. ". . . . they spake against God: they said, Can God . . . ." Conclusion: asking can God is the same as speaking against God.
This subtle truth demands sober reflection. It is important to note they were not doubting a promise but questioning his person! It is not, "Yea, they spake against God; they said, Will God". No, they did not say "will God" but "can God". Those two words, "can God" does not call into question any particular promise but rather the promise maker.
The reality is that if we can settle the question of, "can God" believing the particular promises takes care of itself. The question is easy to answer, just reverse the words. Can God? God can!
What is going on in your life right now that is tempting you to say, "Can God?" Remember the order in which we place these two words determines whether we are speaking against God or for God. Can God? God can!