What does Matthew 15:17 mean?
What is the meaning of Matthew 15:17?

Do you not yet realize?

• Jesus voices gentle rebuke to the disciples (Matthew 15:16) who, after witnessing miracles and hearing clear teaching, still struggle to grasp His point.

• The question underscores that revelation has already been given; understanding is expected (compare Mark 7:18, John 14:9).

• Scripture remains the sure standard for truth (2 Timothy 3:16); when we fail to “realize,” the fault lies in dull hearing, not in God’s clarity (Hebrews 5:12–14).


Whatever enters the mouth

• The Lord speaks of all foods without distinction—“whatever” (Acts 10:15 affirms, “What God has made clean, you must not call impure”).

• Food itself is morally neutral; righteousness is not earned or lost by diet (Romans 14:17, 1 Corinthians 8:8).

• Since God created food for our enjoyment and nourishment (Genesis 9:3, 1 Timothy 4:4), external intake cannot stain the heart.


Goes into the stomach

• The physical process is straightforward: food travels the natural digestive path (1 Corinthians 6:13 notes that the “stomach is for food, and food for the stomach”).

• Jesus separates the physical from the spiritual; ceremonial laws once highlighted purity, but the abiding issue is inner holiness (Titus 1:15).

• By pointing to ordinary digestion, He reminds us that outward rituals cannot cleanse the conscience (Hebrews 9:9–10).


And then is eliminated

• Mark’s parallel adds, “Thus all foods are clean” (Mark 7:19), emphasizing finality: what is expelled leaves no spiritual residue.

• Defilement, therefore, originates not in the digestive tract but in the heart’s evil thoughts, which the Lord lists immediately afterward (Matthew 15:18–19).

• Believers are called to guard the wellspring of life—the heart—knowing that external matters pass away (Proverbs 4:23, Colossians 2:20–23).


summary

Matthew 15:17 teaches that food travels a purely physical route—mouth, stomach, elimination—and cannot defile a person. Jesus redirects attention from ceremonial externals to the heart, affirming that true purity is spiritual, not dietary.

Why does Jesus question the disciples' understanding in Matthew 15:16?
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