Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever. The zeal of the LORD of hosts will perform this.
Isaiah 9:5 For every battle of the warrior is with confused noise, and garments rolled in blood; but this shall be with burning and fuel of fire.
Isaiah 9:6 For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace.
Isaiah 9:7 Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever. The zeal of the LORD of hosts will perform this.
Isaiah 9:8 The Lord sent a word into Jacob, and it hath lighted upon Israel.
Isaiah 9:9 And all the people shall know, even Ephraim and the inhabitant of Samaria, that say in the pride and stoutness of heart,
The verse centers on "increase", "government", "peace", "shall", "upon", "throne", and "david". It is saying that the verse draws attention to "increase" and "government", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 6's "For unto us a child is born..." into verse 8's "The Lord sent a word into Jacob...", so "increase" and "government" belong inside that flow. In Isaiah context, the local focus is the Holy One of Israel, judgment and restoration, the servant of the LORD, and Zion's hope.
A plain takeaway is to answer the verse's own emphasis on "increase" and "government" with trust shaped by these words, not by a vague optimism outside the passage.