The Torah in Parashat Vayera tells the story of Hashem's destruction of the wicked city of Sedom and its neighboring towns. Before annihilating the region, Hashem informed Abraham Abinu of what He was planning to do. Abraham, the paragon of loving kindness and compassion, pleaded on Sedom's behalf, asking G-d to spare the city if He would find fifty righteous residents. G-d agreed, whereupon Abraham went further, pleading that the city be spared if there were even just forty-five worthy inhabitants. Hashem again consented, and Abraham then continued, begging for the city to be saved in the merit of even just thirty righteous people – and then twenty, and then ten. In the end, not even ten righteous people were found in Sedom, and so it and four other cities in the region were destroyed. The question arises as to why Hashem allowed Abraham to continue praying after presenting his initial request that the city should be spared in the merit of fifty righteous residents. Quite obviously, Hashem knew from the outset that there were not even ten people in Sedom worthy of being saved, not to mention twenty, thirty, forty, or forty-five. And yet, He allowed Abraham to continue pleading on the city's behalf, lowering the number all the way down to ten. Knowing that there were not enough righteous people in Sedom to spare the city, shouldn't Hashem have told Abraham to stop at the very beginning? Didn't He know that Abraham was wasting his time by continuing to pray for Sedom? The answer is that this question is predicated on a woefully mistaken assumption about the value and significance of prayer. It presumes that the value of prayer lies solely in its effectiveness in bringing the desired result. If the person will not attain that which he prays for, according to this logic, the prayer is a waste of time. But this is a grave mistake. When we pray for somebody else, we exercise our sensitivity muscle, so-to-speak. We become kinder, more compassionate, more caring, and more empathetic. By beseeching G-d on our fellow's behalf, we build our characters, as we develop within ourselves greater sensitivity for the needs of other people. Hashem therefore allowed Abraham to continue praying – not for Sedom's benefit, as the city was going to be destroyed anyway, but for Abraham's benefit, as the experience of praying made him even greater than he already was. So often we are called upon to pray for an ill patient, for those struggling to find a marriage partner or to have children, for the IDF soldiers, for the Israeli hostages, or for other beloved Jews in need. Painfully, our prayers do not always yield the results we wish for. We have all had the agonizing experience of praying regularly and passionately for an ill patient, and then finding out that the patient did not make it, Heaven forbid. Naturally, we feel very disappointed. And, some people become discouraged by these experiences, and begin questioning the value of their Tefilot. We must remember that prayer is always precious and significant, even if our request was not granted – not only because of how it builds our connection to Hashem, but also because how it builds our character, helping us develop into kinder and more compassionate people, who are sensitive to the needs and concern of others.