Zakharia 14:8-9

14:8 Moreover, on that day living waters will flow out from Jerusalem, ¹  half of them to the eastern sea ²  and half of them to the western sea; ³  it will happen both in summer and in winter.

14:9 The Lord will then be king over all the earth. In that day the Lord will be seen as one with a single name. ⁴ 

[14:8]  ¹ sn Living waters will flow out from Jerusalem. Ezekiel sees this same phenomenon in conjunction with the inauguration of the messianic age (Ezek 47; cf. Rev 22:1-5; also John 7:38).

[14:8]  ² sn The eastern sea is a reference to the Dead Sea (cf. NCV, TEV, CEV, NLT).

[14:8]  ³ sn The western sea is a reference to the Mediterranean Sea (cf. NCV, TEV, CEV, NLT).

[14:9]  ⁴ sn The expression the Lord will be seen as one with a single name is an unmistakable reference to the so-called Shema, the crystallized statement of faith in the Lord as the covenant God of Israel (cf. Deut 6:4-5). Zechariah, however, universalizes the extent of the Lord’s dominion – he will be “king over all the earth.”