Contradiction with Amos 8:10
Amos describes turning "your feasts into mourning," which contrasts with Zechariah 7:1 where inquiries are made about continuing fasts, indicative of a time of reflection rather than mourning.
Amos 8:10: And I will turn your feasts into mourning, and all your songs into lamentation; and I will bring up sackcloth upon all loins, and baldness upon every head; and I will make it as the mourning of an only [son], and the end thereof as a bitter day.
Contradiction with Isaiah 58:5
Isaiah speaks against fasting as merely an outward show without genuine repentance, whereas Zechariah 7:1 involves a question about continuing specific ceremonial fasts.
Isaiah 58:5: Is it such a fast that I have chosen? a day for a man to afflict his soul? [is it] to bow down his head as a bulrush, and to spread sackcloth and ashes [under him]? wilt thou call this a fast, and an acceptable day to the LORD? [a day...: or, to afflict his soul for a day?]
Contradiction with Matthew 9:14-15
Jesus explains that His disciples do not fast while He is with them, contrasting the inquiry about fasting in Zechariah 7:1 which takes place after the time of Christ's presence on Earth.
Matthew 9:14-15: Then came to him the disciples of John, saying, Why do we and the Pharisees fast oft, but thy disciples fast not?
Contradiction with Joel 2:12
Joel calls for a heartfelt return to God with fasting, suggesting a personal and sincere act, which contrasts with Zechariah 7:1's depiction of a formal ritualistic inquiry.
Joel 2:12: Therefore also now, saith the LORD, turn ye [even] to me with all your heart, and with fasting, and with weeping, and with mourning:
Contradiction with Colossians 2:16
Paul advises against letting others judge you in matters of food or religious festivals, highlighting a contrast to the question of religious observance of fasting in Zechariah 7:1.
Colossians 2:16: Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath [days]: [in meat...: or, for eating and drinking] [respect: or, part]
Contradiction with Romans 14:5-6
Discusses personal conviction in observing days or eating, suggesting personal choice rather than institutional inquiry, which differs from the procedural question about fasting in Zechariah 7:1.
Romans 14:5-6: One man esteemeth one day above another: another esteemeth every day [alike]. Let every man be fully persuaded in his own mind. [fully persuaded: or, fully assured]
Contradiction with Luke 18:12
A Pharisee boasts about fasting twice a week, implying self-righteousness, which contrasts with the community's humble inquiry in Zechariah 7:1 about the necessity of continuing traditional fasts.
Luke 18:12: I fast twice in the week, I give tithes of all that I possess.