Yeshayah 2:3

And amim rabbim (many peoples) shall come and say, Come ye, and let us go up to Har HASHEM, to the Beis Elohei Ya'akov; and He will teach us of His Derakhim, and we will walk in His Orakhot; for out of Tziyon shall go forth the torah, and the Devar HASHEM from Yerushalayim.