The Bais Hamikdash Is Built in the Merit of Meah Brachos

"לכן אמר לבני ישראל אני ה' והוצאתי אתכם מתחת סבלת מצרים והצלתי אתכם מעבדתם וגאלתי אתכם בזרוע נטויה ובשפטים גדלים" (ו ו)

Sefer Pa’aneach Raza (Devarim 10:12) wrote that one who is strict to recite meah brachos each day merits to see the building of the Bais Hamikdash.

This is alluded to in this passuk: "לכן" is numerically equivalent to 100. "Lachen – emor liBnei Yisrael" – tell Bnei Yisrael that they should recite לכ"ן brachos each day, and in the merit that they testify through those brachos that "Ani Hashem" they will merit to be redeemed, and later, to even build Me the Mishkan in which there will be 100 adanim of silver to correspond to the one hundred brachos that they made. (Ule’Asher Amar)