'Shutting' in the Bible

Their poison is as poison of a serpent, As a deaf asp shutting its ear,

Even a fool keeping silence is reckoned wise, He who is shutting his lips intelligent!

Whoso is shutting his ear from the cry of the poor, He also doth cry, and is not answered.

And I have placed the key Of the house of David on his shoulder, And he hath opened, and none is shutting, And hath shut, and none is opening.

Whoso is walking righteously, And is speaking uprightly, Kicking against gain of oppressions, Shaking his hands from taking hold on a bribe, Stopping his ear from hearing of blood, And shutting his eyes from looking on evil,