What does Isaias Chapter 7 say, and which statements belong to its speaker?

Isaias 7 places Achaz son of Joathan son of Ozias in Juda's kingship. Rasin of Syria and Phacee son of Romelia of Israel attack Jerusalem without prevailing. Syria resting on Ephraim moves house-of-David and people's hearts like windmoved trees. Lord sends Isaias and Jasub his remaining son to upper-pool conduit by fuller's-field road: be quiet and fearless of the two smoking firebrand tails. Their plan is to rouse and draw Juda and install Tabeel's son; God says it will not stand. Syria's head Damascus and its head Rasin, Ephraim ceased as people within 65years; Ephraim's head Samaria and its head Romelia's son. Unbelief means not continuing.

Lord invites Achaz to ask a sign from hell-depth or height; he refuses, saying he will not tempt Lord. House of David is reproached for grieving men and God. Lord gives sign: virgin conceives son Emmanuel; he eats butter/honey to know refusing evil and choosing good. Before that discernment the abhorred land loses its two kings. Secret Assyrian alliance, false-piety motive, peasant class and name translation are not supplied locally.

Days unlike any since Ephraim-Juda separation come with Assyrian king. Lord hisses for Egyptian river-extremity fly and Assyrian bee; they rest in valley torrents, rock holes, shrubs and hollows. Hired beyond-river Assyrian razor shaves head, feet-hair and beard. A man nourishes young cow and two sheep; milk abundance means butter, and survivors eat butter/honey. Thousand vines worth thousand silver pieces become briers/thorns, entered with bows/arrows. Raked hills avoid thorn fear and serve ox-feeding and lesser cattle trampling. These retain oracle sequence rather than invented garrison movements or guaranteed political rules.