Isaiah 37:1

Hezekiah : the son of Ahaz who succeeded him as king of Judah; an ancestor of Jesus,son of Ahaz; king of Judah,forefather of the prophet Zephaniah,an Israelite chief who signed the covenant to obey God's law

Isaiah 37:4

Assyria : a member of the nation of Assyria
(36° 21´, 43° 9´); (36° 21´, 43° 9´)

Rabshakeh : a senior official who governed provinces (IBD)

Isaiah 37:15-20

Assyria : a member of the nation of Assyria
(36° 21´, 43° 9´); (36° 21´, 43° 9´)

Hezekiah : the son of Ahaz who succeeded him as king of Judah; an ancestor of Jesus,son of Ahaz; king of Judah,forefather of the prophet Zephaniah,an Israelite chief who signed the covenant to obey God's law

Israel : a citizen of Israel.,a member of the nation of Israel

Sennacherib : king of Assyria; enemy of King Hezekiah of Judah