Commentaries:
Robertson's Word Pictures (NT)
Perceive ye not? (ou noeite). Christ expects us to make use of our nouv, intellect, not for pride, but for insight. The mind does not work infallibly, but we should use it for its God-given purpose. Intellectual laziness or flabbiness is no credit to a devout soul.
Other Robertson's Word Pictures (NT) entries containing Matthew 15:17:
Hebrews 11:3
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