I think the blood on their hands refers to oppression of the poor
Is that an example of the fluid approach?
This is the passage I referenced:
Isaiah 1:10-15 KJV
10 Hear the word of the LORD, ye
rulers of Sodom;
give ear unto the law of our God, ye people of Gomorrah.
11
To what purpose is the multitude of your sacrifices unto me? saith the LORD: I am full of the burnt offerings of rams, and the fat of fed beasts; and I delight not in the blood of bullocks, or of lambs, or of he goats.
12
When ye come to appear before me,
who hath required this at your hand,
to tread my courts?
13 Bring no more vain oblations;
incense is an abomination unto me; the new moons and sabbaths, the calling of assemblies, I cannot away with;
it is iniquity, even the solemn meeting.
14
Your new moons and
your appointed feasts my soul hateth: they are a trouble unto me; I am weary to bear them.
15
And when ye spread forth your hands,
I will hide mine eyes from you:
yea,
when ye make many prayers,
I will not hear:
your hands are full of blood.
When he says
rulers of Sodom he is speaking to the rulers at Yerushalem who tread the temple and its courts, that is, he speaks to the Kohanim, (Priests), for they are the ones who offered the animal sacrifices and incense and prayers for the nation and the people. Moreover he says
your new months and
your appointed feasts, (not "My" new months or "My" appointed feasts). Moreover the Prophet speaks in these terms yet again to the same people, the rulers at Yerushalem temple who were the Kohanim.
Isaiah 28:5-18 KJV
5 In that day shall the LORD of hosts be for a crown of glory, and for a diadem of beauty, unto the residue of his people,
6 And for a spirit of judgment to him that sitteth in judgment, and for strength to them that turn the battle to the gate.
7 But they also have erred through wine, and through strong drink are out of the way;
the priest and the prophet have erred through strong drink, they are swallowed up of wine, they are out of the way through strong drink; they err in vision, they stumble in judgment.
8 For all tables are full of vomit and filthiness, so that there is no place clean.
9 Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
10 For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:
11 For with stammering lips and another tongue will he speak to this people.
12
To whom he said,
This is the rest wherewith ye may cause the weary to rest;
and this is the refreshing:
yet they would not hear.
13 But the word of the LORD was unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little; that they might go, and fall backward, and be broken, and snared, and taken.
14
Wherefore hear the word of the LORD, ye scornful men, that rule this people which is in Jerusalem.
15
Because ye have said,
We have made a covenant with death,
and with hell are we at agreement; when the overflowing scourge shall pass through, it shall not come unto us:
for we have made lies our refuge,
and under falsehood have we hid ourselves:
16 Therefore thus saith the Lord GOD,
Behold,
I lay in Zion for a foundation a stone,
a tried stone,
a precious corner stone,
a sure foundation: he that believeth shall not make haste.
17 Judgment also will I lay to the line, and righteousness to the plummet:
and the hail shall sweep away the refuge of lies, and the waters shall overflow the hiding place.
18
And your covenant with death shall be disannulled,
and your agreement with hell shall not stand; when the overflowing scourge shall pass through, then ye shall be trodden down by it.
This covenant with death is the erroneous understanding of the animal sacrifices by way of misunderstanding and incorrect interpretation of the sacrifices in the Torah. It is also a reference to the warning given through Mosheh in Deuteronomy 30:10-20,
"See, (pay attention) I have set before you this day life and good, and death and evil...", and again,
"I call heaven and earth to record this day against you, that I have set before you life and death, blessing and cursing: therefore choose life..."
This is about understanding, perception, interpretation, how you hear what you hear, and how you read and understand the Torah: and to choose the fleshly and carnal way of understanding is to choose death, (another reason Paul says that the natural mind of the natural man cannot please Elohim, for it cannot be subject to His Torah-Instruction, Romans 8:5-8).
And moreover this is what the Prophet says at the end of the book:
Isaiah 66:1-2 KJV
1 Thus saith the LORD, The heaven is my throne, and the earth is my footstool: where is the house that ye build unto me? and where is the place of my rest?
2 For all those things hath mine hand made, and all those things have been, saith the LORD:
but to this man will I look,
even to him that is poor and of a contrite spirit,
and trembleth at my word.
This is clearly saying that mankind is to be the holy temple of the Most High, not a temple building made with the hands of men, and this is confirmed in the testimony of Stephen in Acts 7 who quotes this passage and says that those rejecting this understanding are stiffnecked and uncircumcised in heart and ears who are rejecting the Holy Spirit, (Acts 7:47-51).
And the Prophet continues:
Isaiah 66:3-4 KJV
3 He that killeth an ox
is as if he slew a man; he that sacrificeth a lamb,
as if he cut off a dog's neck; he that offereth an oblation,
as if he offered swine's blood; he that burneth incense,
as if he blessed an idol.
Yea,
they have chosen their own ways,
and their soul delighteth in their abominations.
4 I also will choose their delusions, and will bring their fears upon them; because when I called, none did answer;
when I spake,
they did not hear:
but they did evil before mine eyes,
and chose that in which I delighted not.
Again, it's the choice they made: they chose that in which the Most High delighted not, and in so doing they chose death, just as Mosheh warned against in Deuteronomy 30, and they made for themselves a covenant with death by way of slaughtering the innocent living souls of the creation of Elohim while imagining themselves to be obeying the Torah.
Psalms 51:
14
Deliver me from bloodguiltiness, O God, thou God of my salvation: and my tongue shall sing aloud of thy righteousness.
15 O Lord, open thou my lips; and my mouth shall shew forth thy praise.
16
For thou desirest not sacrifice; else would I give it:
thou delightest not in burnt offering.
17
The sacrifices of God are a broken spirit:
a broken and a contrite heart,
O God,
thou wilt not despise.
Hosea 6:6-7 KJV
6
For I desired mercy,
and not sacrifice;
and the knowledge of God more than burnt offerings.
7 But they like men
have transgressed the covenant: there have they dealt
treacherously against me.
Matthew 12:7 KJV
7 But if ye had known what this meaneth,
I will have mercy,
and not sacrifice, ye would not have condemned the guiltless.
This is the Word speaking:
Psalms 40:6-10 KJV
6
Sacrifice and offering thou didst not desire; mine ears hast thou opened:
burnt offering and sin offering hast thou not required.
7 Then said I, Lo, I come: in the volume of the book
[header of the Sefer, (Genesis 1)] it is written of me,
8 I delight to do thy will, O my God: yea, thy law
[Torah] is within my heart.
9
I have preached righteousness in the great congregation:
[because the Torah is read continually in the synagogues and congregations] lo, I have not refrained my lips, O LORD, thou knowest.
10
I have not hid thy righteousness within my heart;
I have declared thy faithfulness and thy salvation:
I have not concealed thy lovingkindness and thy truth from the great congregation.
The Master in the Gospel accounts and the Psalms and the Prophets tell an entirely different story than the Pharisaic-Sadducaic outward carnal-man understanding of the Torah which continues to be espoused even in most of the mainstream Christian world unto this day, (mostly so that the Torah may be rejected), even despite what Paul says about the Torah being spiritual, again, Romans 7:14a.