Matthew 15:7

ὑποκριταί : no thought of conciliation; open war at all hazards. “Actors,” in their zeal for God, as illustrated in the case previously cited. God first, parents second, yet God not in all their thoughts. καλῶς, appositely, to the purpose. Isaiah might not be thinking of the Pharisees, but certainly the quotation is very felicitous in reference to them, exactly describing their religious character. Mt. follows Mk. in quoting; neither follows closely the Sept [91] (Isaiah 29:13).

[91] Septuagint.