Dibur_hamatchil for Deuteronomy 3:25

this good mountain and the Lebanon. Everyone called it ‘mountain.’ Avraham called it mountain, as it says “On the mountain, the Lord will be seen.” (Bereshit 22:14) David called it mountain, as it says “Who will ascend upon the Lord's mountain…” (Tehillim 24:3) Isaiah called it mountain, as it says “And it shall be at the end of the days, that the mountain of the Lord's house shall be firmly established at the top of the mountains…” (Yeshayahu 2:2) The nations called it mountain, as it says “And many peoples shall go, and they shall say, "Come, let us go up to the Lord's mountain…” (ibid 2:3) Levanon refers to the Holy Temple, as it says “You are [as] Gilead to me, O head of the Levanon…” (Yirmiyahu 22:6) and it says “…and the Levanon shall fall through a mighty one.” (Yeshayahu 10:34) And why is it called Levanon? Because it bleaches (malbin) the sins of Israel like snow, as it says “If your sins prove to be like crimson, they will become white as snow…” (Yeshayahu 1:18)