Contradiction with Matthew 28:20
Deuteronomy 16:4 forbids leaving leftover sacrifices until the morning, whereas Matthew 28:20 emphasizes teaching all things Jesus commanded, potentially leading to different interpretations of abiding by Old Testament laws.
Matthew 28:20: Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, [even] unto the end of the world. Amen.
Contradiction with Colossians 2:16-17
Deuteronomy 16:4 focuses on specific observance regulations, whereas Colossians 2:16-17 suggests freedom from strict observance of religious festivals, new moons, or Sabbaths.
Colossians 2:16-17: 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
Deuteronomy 16:4 mandates specific festival observance; Romans 14:5-6 promotes individual conviction over observing specific days.
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 Hebrews 10:1
Deuteronomy 16:4 involves adherence to sacrificial laws, whereas Hebrews 10:1 implies that the law, including sacrifices, is a shadow and not the reality.
Hebrews 10:1: For the law having a shadow of good things to come, [and] not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.