Isaiah's Writing Style: Groups of Words
The prophet will use a theme in a group of verses, and use words from that theme. Then, in a few verses later, he will use a completely different one. Once you notice the similarities between them, you can see the groups.
I think he uses these to show, in contrast, how the people or the situation is.
1:2 - heavens, earth
1:3 - the ox, the ass; his owner, his master's crib
1:4 - sinful nation, people laden with iniquity, a seed of evildoers, children that are corrupters
There are also arching summaries as well, across the groups of verses:
Isaiah 1:2-4
they have rebelled against me
Israel doth not know
my people doth not consider
they have forsaken the Lord
they have provoked the Holy one of Israel unto anger
they are gone away backward
Isaiah 1:5-6
the whole head, the whole heart, the sole of the foot, the head
wounds, bruises, putrifying sores
closed, bound up, mollified with ointment
Isaiah 1:18
Isaiah 1:19-20
willing, obedient
refuse, rebel
Isaiah 1:21
Isaiah 1:22
silver, wine
dross, mixed with water
Isaiah 1:24
Isaiah 1:25
Isaiah 1:26
Isaiah 1:27
Zion, converts
judgement, righteousness
Isaiah 1:29-30
oaks (trees), gardens
shall be ashamed, shall be confounded
which ye have desired, that ye have chosen
Isaiah 1:31
Isaiah 1:3
the ox knoweth
the ass
Israel
my people
Isaiah 1:4
Isaiah 1:10
Isaiah 1:16-17
cease to do evil / learn to do well
seek judgement / relieve the oppressed
judge the fatherless / plead for the widow
Isaiah 1:19-20