2 Kings is, at times, difficult to read. Israel and Judah are separate kingdoms and they both struggle with being faithful to God-they generally do very poorly. Hezekiah King of Judah is an exception; he follows the commands of the Lord. In this passage Hezekiah is praising God as Creator, ‘ thou hast made heaven and earth’. Hezekiah compares the Creator God to the gods of Assyria-there is no comparison.
The Creator God is able to deliver because he exists and is the maker of Man. The gods of Assyria do not exist and are the makings of Man. The distinction is profound. Profound distinctions are usually important. The importance to us is to distinguish between the gods of this world, and the God that made this world. We like Hezekiah should praise the maker of heaven and earth, the one true God.