Matthew 15:4

ὁ γὰρ θεὸς ἐνετείλατο, answering to τὴν ἐντολὴν τοῦ θεοῦ, as in Matthew 15:5, ὑμεῖς λέγετε refers back to διὰ τὴν παράδοσιν ὑμῶν. St Mark has Μωϋσῆς γὰρ εἶπεν (Matthew 7:10), an instructive variation.

ὁ κακολογῶν. As a classical word κακολογεῖν or κακῶς λέγειν—the preferable form (Lob. Phryn. 200), means to ‘abuse,’ ‘revile;’ so in LXX. θεοὺς οὐ κακολογήσεις, Exodus 22:28. In many passages the Hebrew word represented here by κακολογεῖν is translated by ἀτιμάζειν and means ‘to treat with disrespect,’ ‘to despise.’ In one form, however, of the Hebr. verb the meaning is ‘to curse,’ but the first sense is to be preferred here: ‘whoever makes light of their claims to support,’ &c. See Guillemard, Hebraisms in N.T., ad loc.