Contradiction with Romans 3:23
Zechariah 3:9 speaks about the "removal of sin in one day," whereas Romans 3:23 states that all have sinned, implying sin is a continuous human condition.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with Ezekiel 18:20
Zechariah 3:9 suggests a single day's resolution of sin, different from Ezekiel 18:20 which indicates each individual is accountable for their own sin.
Ezekiel 18:20: The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son: the righteousness of the righteous shall be upon him, and the wickedness of the wicked shall be upon him.
Contradiction with Hebrews 10:4
Zechariah 3:9 speaks of the removal of sin, in contrast, Hebrews 10:4 states it is impossible for the blood of bulls and goats to take away sins.
Hebrews 10:4: For [it is] not possible that the blood of bulls and of goats should take away sins.
Contradiction with Jeremiah 31:34
Contrasts with Zechariah 3:9 by mentioning a future time when the Lord will forgive iniquity and remember sin no more, suggesting a more enduring process.
Jeremiah 31:34: And they shall teach no more every man his neighbour, and every man his brother, saying, Know the LORD: for they shall all know me, from the least of them unto the greatest of them, saith the LORD: for I will forgive their iniquity, and I will remember their sin no more.
Contradiction with Romans 6:1-2
Suggests that believers should not continue in sin, unlike Zechariah 3:9 which speaks of instant sin removal.
Romans 6:1-2: What shall we say then? Shall we continue in sin, that grace may abound?
Contradiction with Hebrews 10:11
Talks about daily priestly sacrifices that can never take away sins, while Zechariah 3:9 indicates a single-day removal of sin.
Hebrews 10:11: And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins:
Contradiction with Hebrews 9:26
Indicates that Christ has appeared once to put away sin by the sacrifice of himself, unlike the depiction of immediate sin removal in Zechariah 3:9.
Hebrews 9:26: For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.
Contradiction with 1 John 2:2
States Christ is the propitiation for our sins, suggesting an ongoing advocacy rather than an immediate removal mentioned in Zechariah 3:9.
1 John 2:2: And he is the propitiation for our sins: and not for ours only, but also for [the sins of] the whole world.