Come now
yalak  (yaw-lak')
to walk; causatively, to carry (in various senses)
and let us reason together
yakach  (yaw-kahh')
to be right (i.e. correct); reciprocal, to argue; causatively, to decide, justify or convict
'amar  (aw-mar')
to say (used with great latitude)
the LORD
Yhovah  (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
though your sins
chet'  (khate)
a crime or its penalty -- fault, grievously, offence, (punishment of) sin.
be as scarlet
shaniy  (shaw-nee')
crimson, properly, the insect or its color, also stuff dyed with it -- crimson, scarlet (thread).
they shall be as white
laban  (law-ban')
to be (or become) white; also to make bricks -- make brick, be (made, make) white(-r).
as snow
sheleg  (sheh'-leg)
snow (probably from its whiteness) -- snow(-y).
though they be red
'adam  (aw-dam')
be (dyed, made) red (ruddy).
like crimson
towla`  (to-law')
a maggot (as voracious); specifically the crimson-grub, but used only (in this connection) of the color from it, and cloths dyed therewith -- crimson, scarlet, worm.
they shall be as wool
tsemer  (tseh'-mer)
wool -- wool(-len).