R. Yishmael says: In the merit of Jerusalem I will split the sea for them, as it is written (Isaiah 52:1) "Awake, awake, clothe yourself in splendor, O Zion. Don your robes of glory, O Jerusalem, holy city. For there will not again enter you the uncircumcised and the unclean", and (Ibid. 51:9-10) "Awake, awake, clothe yourself in splendor, O arm of the L–rd. Awake as in days of old, as in generations of yore … Is it not You that dried up the sea, the waters of the great deep, a road for the redeemed to cross?"