Contradiction with Ezekiel 34:26
Amos 4:7 describes withholding rain as a form of judgment, whereas Ezekiel 34:26 speaks of rain being a blessing.
Ezekiel 34:26: And I will make them and the places round about my hill a blessing; and I will cause the shower to come down in his season; there shall be showers of blessing.
Contradiction with Matthew 5:45
Amos 4:7 talks about selective withholding of rain, while Matthew 5:45 states that God causes rain to fall on both the just and the unjust.
Matthew 5:45: That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.
Contradiction with Deuteronomy 11:14
Amos 4:7 indicates a lack of rain as a punishment, whereas Deuteronomy 11:14 promises rain as a reward for obedience.
Deuteronomy 11:14: That I will give [you] the rain of your land in his due season, the first rain and the latter rain, that thou mayest gather in thy corn, and thy wine, and thine oil.
Contradiction with Leviticus 26:4
Amos 4:7 refers to withholding rain, while Leviticus 26:4 promises rain in due season as a blessing for obedience.
Leviticus 26:4: Then I will give you rain in due season, and the land shall yield her increase, and the trees of the field shall yield their fruit.
Contradiction with Zechariah 10:1
Amos 4:7 emphasizes the absence of rain in certain areas, whereas Zechariah 10:1 encourages asking for rain, promising an abundant response from God.
Zechariah 10:1: Ask ye of the LORD rain in the time of the latter rain; [so] the LORD shall make bright clouds, and give them showers of rain, to every one grass in the field. [bright...: or, lightnings]
Paradox #1
The contradiction could be in the description of controlling where rain falls selectively. Scientifically, weather patterns are complex and influenced by various atmospheric conditions. There is no natural mechanism to selectively cause rain in one place and withhold it in another adjacent area based on intention.