Contradiction with Matthew 5:44
This verse instructs to love your enemies, which contrasts with the idea of taking spoils from the Egyptians as they leave.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Paradox #1
The contradiction in Exodus 3:21 could be seen when considering the fairness of taking goods from the Egyptians. It might seem inconsistent with the idea of honesty and not taking what isn't yours. This could be viewed as a conflict between divine instruction and moral ethics about fairness and justice.