Another interpretation of "You have led in Your strength" (Exodus 15:13): by the merit of the kingdom of the house of David, which they are destined to receive. And "strength" means nothing other than kingship, as it is said, "O LORD, in Your strength the king rejoices" (Psalms 21:2), and it says, "The LORD is a strength to His people, and a stronghold of salvation to His anointed is He" (Psalms 28:8), and it says, "and He will give strength to His king" (1 Samuel 2:10). "To Your holy habitation" (Exodus 15:13): by the merit of the Temple, which they are destined to build. And "habitation" means nothing other than the Temple, as it is said, "and they have laid waste His habitation" (Jeremiah 10:25), and it says, "Behold Zion, the city of our appointed seasons" (Isaiah 33:20), and so forth.
Led in Your Strength by Merit of David's Kingdom
Yalkut Shimoni on Torah 251:6
דָּבָר אַחֵר נֵהַלְתָּ בְעָזְּךָ, בִּזְכוּת מַלְכוּת בֵּית דָּוִד הֵן עֲתִידִין לְקַבֵּל, וְאֵין עֹז אֶלָּא מַלְכוּת, שֶׁנֶּאֱמַר (שם כא, ב) "ה' בְּעָזְּךָ יִשְׂמַח מֶלֶךְ", וְאוֹמֵר "ה' עֹז לָמוֹ וּמָעוֹז יְשׁוּעוֹת מְשִׁיחוֹ הוּא", וְאוֹמֵר (שמואל א ב, י) "וְיִתֶּן עֹז לְמַלְכּוֹ". אֶל נְוֵה קָדְשֶׁךָ. בִּזְכוּת בֵּית הַמִּקְדָּשׁ שֶׁהֵן עֲתִידִין לִבְנוֹת, וְאֵין נָוֶה אֶלָּא בֵּית הַמִּקְדָשׁ, שֶׁנֶּאֱמַר (ירמיה י, כה) "וְאֶת נָוֵהוּ הֵשַׁמּוּ" וְאוֹמֵר "חֲזֵה צִיּוֹן קִרְיַת מוֹעֲדֵנוּ" וְגוֹ'.