Contradiction with Romans 3:23
This verse states that all have sinned, which might contradict with Hebrews 12:23's notion of the church of the firstborn being made perfect.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with 1 John 1:8
It claims that anyone who says they have no sin deceives themselves, whereas Hebrews 12:23 includes spirits of just men made perfect.
1 John 1:8: If we say that we have no sin, we deceive ourselves, and the truth is not in us.
Contradiction with Ecclesiastes 7:20
This verse asserts that there is no one on earth always doing good and never sinning, contrasting with the perfection mentioned in Hebrews 12:23.
Ecclesiastes 7:20: For [there is] not a just man upon earth, that doeth good, and sinneth not.
Contradiction with Psalm 14:3
States that all have turned aside and none doeth good, in contradiction to the perfected spirits in Hebrews 12:23.
Psalm 14:3: They are all gone aside, they are [all] together become filthy: [there is] none that doeth good, no, not one. [filthy: Heb. stinking]
Contradiction with Isaiah 53:6
Declares that all have gone astray, conflicting with the view of perfected spirits in Hebrews 12:23.
Isaiah 53:6: All we like sheep have gone astray; we have turned every one to his own way; and the LORD hath laid on him the iniquity of us all. [laid...: Heb. made the iniquity of us all to meet on him]
Paradox #1
Hebrews 12:23 mentions "the spirits of the righteous made perfect." A possible theological conflict could arise regarding the concept of being "made perfect." Some might see a contradiction with other biblical teachings that suggest humans are not perfect or reach perfection only through ongoing sanctification or afterlife processes. Different interpretations and doctrinal beliefs about how and when this perfection occurs might lead to perceived inconsistencies.