Job 15:16 says man drinks iniquity like water — a parallel to wickedness being sweet in the mouth. Both depict savoring sin.

Psalm 10:7 describes trouble and evil under the tongue, directly paralleling the hidden wickedness in Job 20:12.

Proverbs 9:17 echoes the same idea: stolen water (sin) is sweet, directly paralleling wickedness being sweet in Job 20:12.

Proverbs 9:18 reveals the deadly end of that sweetness—her guests are in the grave—adding the consequence implied in Job's context.

Proverbs 20:17 also pairs sweet sin with a bitter end (mouth full of gravel), mirroring the temporary pleasure and ultimate judgment.

Proverbs 19:28 describes the wicked gulping down evil, paralleling Job's image of wickedness being sweet and hidden in the mouth.