Rashi said that we don't use "Magen Dovid" in the Amidah because it is too similar to the already-used "Magen Avraham" : Rashbam Pesachim 117b "De'Aftarta"
Including the prayer mentioning Gd's Power: Rosh HaShanah 32a; Megillah 17b
Having a blessing on the power of Repentance following the blessing on wisdom: Megillah 17b
Structure of the Blessing of Redemption [Geulah] (as a request): Pesachim 117b
Why the Blessing on Health doesn't immediately follow the blessing on the power of Repentance: Megillah 17b
The source for the order of blessings on Forgiveness-Redemption-Health: Megillah 17b
Why the blessing of Redemption is the 7th Blessing, specifically: Megillah 17b
Why the blessing of Health is the 8th Blessing, specifically: Megillah 17b
Why the blessing of Commerce is the 9th Blessing, specifically: Megillah 17b
Why the blessing of the Return of the Exiles is after the blessing on Commerce: Megillah 17b
Why the blessing for the Return of the Judges follows the blessing on the Return of the Exiles: Megillah 17b
Why the blessing against Traitors follows the blessing on Return of the Judges: Megillah 17b
Why the blessing for the Righteous follows the blessing against Traitors: Megillah 17b
Why the blessing for Jerusalem follows the blessing on the Righteous: Megillah 17b
Why the blessing for the "Raising of the Horn of Redemption" follows the blessing for Jerusalem: Megillah 17b-18a
Blessing of "Matzmi'ach Keren Yeshu'ah [Raising of the Horn of Redemption]" is parallel to "Magen Dovid" of the Blessings for the Reading from the Prophets, but is in Request form: Pesachim 117b
Why the blessing for the "Raising of the Horn of Redemption" is followed by the blessing for the acceptance of our prayer, followed by the prayer for the Temple Service, followed by prayers of Thanks: Megillah 18a
Saying "Modim" twice: Succah 53b; Megillah 25a
Considering the blessing of the Temple Service to be one with the Blessing of Thanks: Megillah 18a
