Sefer Bereishis in the Sod of Amen
“ונתחזק חזק חזק”
Harav Avraham Eiger of Lublin wrote:
In Chumash Bereishis there are 91 parshiyos (setumos and pesuchos) which is numerically equivalent to amen. This alludes to the connection between the Chumash, amidst whose parshiyos is concealed the root of emunas Yisrael until the end of generations, to the mitzvah of answering amen, whose entire essence is emunah by virtue of the fact that HaKadosh Baruch Hu is a “K-l Melech Ne’eman.” (Shevet M’Yehudah 5666)
Protection and Shemirah in the Merit of Answering Amen
הנערים את יברך רע מכל אתי הגאל המלאך” וידגו ויצחק אברהם אבתי ושם שמי בהם ויקרא (טז מח) “הארץ בקרב לרב
The Abir Yaakov explained:
מלאך is numerically equivalent to אמן because for answering amen a person merits protection and shemirah from all bad things, as Yaakov merited when an angel was sent to save him in his time of trouble, as it says “Hamalach hago’el osi mikol ra.” Yirei Hashem also merit this, as it says (Tehillim 34:8): “Choneh malach Hahsem saviv le’yereiav vayechaltzem.” And we can add an allusion to the special shemirah that one who answers amen merits from the acronym of – which א-דני סביב ליראיו the words is numerically equivalent to amen. (Aleph Binah Tehillim 34:8)