arashat Va'et'hanan begins with Moshe's impassioned plea to G-d that he be allowed to enter the Land of Israel. Speaking to Beneh Yisrael before his passing, Moshe recalled how "I beseeched G-d at that time, saying" – how he begged for the privilege of entering the land together with Beneh Yisrael. The Or Ha'haim Ha'kadosh (Rav Haim Ben-Attar, 1696-1743) comments that in this verse, with which Moshe introduces his prayer, he alludes to us four principles regarding prayer, the ways to maximize its effectiveness and help ensure that our prayers are accepted. The first principle is expressed in the word "Va'et'hanan" – "I beseeched." This particular verb refers not simply to prayer, but to prayer with humility and submission, like a poor person begging for charity. The Or Ha'haim cites in this context the verse in the Book of Mishleh (18:23 ), "Tahanunim Yedaber Rash" – "A pauper speaks words of supplication." The word "Va'e'thanan," then, denotes prayer recited like a pauper who humbly begs for help, recognizing our complete dependence on G-d for our needs. Secondly, the Or Ha'haim continues, Moshe says that he prayed to "Hashem" – referring to G-d with the Name of "Havaya," which signifies G-d's attribute of compassion. While praying, we must intend to appeal to what the Or Ha'haim calls "Mekor Ha'rahamim" – "the source of compassion," G-d's attribute of mercy, trusting in His infinite compassion, that He is prepared to provide us with our needs and grant our requests even if we are undeserving. Moshe then emphasizes that he uttered this prayer "Ba'et Ha'hi" – "at that time." The Or Ha'haim explains that although prayer is, of course, valuable and beneficial at any time, certain occasions are considered an "Et Rason" (literally, "a time of goodwill"), an especially propitious time for having our prayers answered. Moshe Rabbenu, of course, knew precisely which times were an "Et Rason," and so he uttered his prayer then. The Or Ha'haim cites the Sages' interpretation that the phrase "Ba'et Hahi" refers to the time of Beneh Yisrael's successful battle against the kingdoms of Sihon and Og, which effectively began the process of conquering Eretz Yisrael. As Hashem had begun this process, Moshe perhaps felt that this was an auspicious time to pray for the privilege of seeing the completion of this process across the river, in the Land of Israel. The final word in this verse – "L'emor" ("saying") – implies that Moshe chose his words carefully when he prayed. When one prays to G-d, he must ensure to use the right words, to express himself clearly, to articulate very specifically what it is that he requests. Proper and precise formulation of one's words is critical for the efficacy of his prayer. May we follow Moshe's example of prayer, praying in the right way, with the right intentions, and at the right times, so that we will be worthy of having all our prayers answered in full, Amen.