Behold, the LORD's hand is not shortened, that it cannot save, nor his ear dull, that it cannot hear but your iniquities have made a separation between you and your God, and your sins have hidden his face from you so that he does not hear.

— Isaiah 591-2

If I had cherished iniquity in my heart, the Lord would not have listened.

— Psalm 6618

If one turns away his ear from hearing the law, even his prayer is an abomination.

— Proverbs 289

Likewise, husbands, live with your wives in an understanding way, showing honor to the woman as the weaker vessel, since they are heirs with you of the grace of life, so that your prayers may not be hindered.

— 1 Peter 37

The LORD is far from the wicked, but he hears the prayer of the righteous.

— Proverbs 1529