Contradiction with Exodus 32:10
In Exodus 32:10, God expresses His initial intent to destroy the Israelites, which contrasts with the mercy shown in Deuteronomy 9:20 where God refrains from fully executing His wrath on Aaron.
Exodus 32:10: Now therefore let me alone, that my wrath may wax hot against them, and that I may consume them: and I will make of thee a great nation.
Contradiction with Numbers 20:12
In Numbers 20:12, Moses and Aaron are punished for their unbelief and disobedience, while Deuteronomy 9:20 shows the Lord sparing Aaron from destruction despite his involvement in the golden calf incident.
Numbers 20:12: And the LORD spake unto Moses and Aaron, Because ye believed me not, to sanctify me in the eyes of the children of Israel, therefore ye shall not bring this congregation into the land which I have given them.
Contradiction with Isaiah 1:18
Isaiah 1:18 speaks of God's willingness to forgive and cleanse from sin, which contrasts with the anger and need for intercession expressed in Deuteronomy 9:20.
Isaiah 1:18: Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.
Paradox #1
Deuteronomy 9:20 refers to an instance where God was angry with Aaron, but Moses interceded on his behalf. A potential contradiction arises when comparing this with other biblical texts that either do not mention God's anger towards Aaron or portray Aaron in a more neutral or positive light, which might seem inconsistent with the severity suggested in this verse.
Paradox #2
Deuteronomy 9:20 mentions that God was angry with Aaron and was ready to destroy him, but Moses prayed on Aaron's behalf to spare him. The contradiction or inconsistency here could be that despite Aaron's role in leading people into wrongdoing, he was spared from punishment, which might seem inconsistent with the idea of justice and consequences for actions.