1 Samuel 3:14

Therefore I swore to the house of Eli [that] the iniquity of the house of Eli would not be atoned for by sacrifice or by offering forever."

Isaiah 22:14

And it was revealed in my ears [by] Yahweh of hosts: "Surely this sin will not be atoned for you until you die!" says the Lord, Yahweh of hosts.

1 Samuel 2:25

If a man sins against a man, then God can intercede for him. But if a man sins against Yahweh, who can intercede for him?" But they did not {obey} their father, because Yahweh wanted to kill them.

Leviticus 15:31

"And you shall keep the {Israelites} separate from their uncleanness so that they might not die because of their uncleanness by their making my tabernacle, which [is] in their midst, unclean.

Numbers 15:30-31

But the one {who acts presumptuously} from among the native or alien blasphemes against Yahweh, and that person must be cut off from the midst of the people.

Psalm 51:16

For you do not delight [in] sacrifice or I would give [it]. [With] a burnt offering you are not pleased.

Jeremiah 7:16

"And you, you must not pray for this people, and you must not lift up for them a cry of entreaty or a prayer, and you must not plead with me, for I [will] not hear you.

Jeremiah 15:1

Then Yahweh said to me, "[Even] if Moses and Samuel stood {before me}, my heart [would] not [be] to this people. Send [them] away from my {sight}, and let them go out.

Ezekiel 24:13

In your uncleanness [is] obscene conduct, because I cleansed you, but you were not clean from your uncleanness; you will not be clean again until {I fully vent my rage} on you.

Hebrews 10:4-10

For [it is] impossible [for] the blood of bulls and goats to take away sins.

Hebrews 10:26-31

For [if] we keep on sinning deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins,

Treasury of Scripture Knowledge

Summary

And therefore I have sworn unto the house of Eli, that the iniquity of Eli's house shall not be purged with sacrifice nor offering for ever.

Bible References

The iniquity

1 Samuel 2:25
If a man sins against a man, then God can intercede for him. But if a man sins against Yahweh, who can intercede for him?" But they did not {obey} their father, because Yahweh wanted to kill them.
Numbers 15:30
But the one {who acts presumptuously} from among the native or alien blasphemes against Yahweh, and that person must be cut off from the midst of the people.
Psalm 51:16
For you do not delight [in] sacrifice or I would give [it]. [With] a burnt offering you are not pleased.
Isaiah 22:14
And it was revealed in my ears [by] Yahweh of hosts: "Surely this sin will not be atoned for you until you die!" says the Lord, Yahweh of hosts.
Jeremiah 7:16
"And you, you must not pray for this people, and you must not lift up for them a cry of entreaty or a prayer, and you must not plead with me, for I [will] not hear you.
Jeremiah 15:1
Then Yahweh said to me, "[Even] if Moses and Samuel stood {before me}, my heart [would] not [be] to this people. Send [them] away from my {sight}, and let them go out.
Ezekiel 24:13
In your uncleanness [is] obscene conduct, because I cleansed you, but you were not clean from your uncleanness; you will not be clean again until {I fully vent my rage} on you.
Hebrews 10:4
For [it is] impossible [for] the blood of bulls and goats to take away sins.