Job 15:14

“What is man, that he should be clean? and he which is born of a woman, that he should be righteous?”

Job 25:4

“How then can man be justified with God? or how can he be clean that is born of a woman?”

Psalms 73:13

“Verily I have cleansed my heart in vain, and washed my hands in innocency.”

Psalms 119:9

“ Wherewithal shall a young man cleanse his way? by taking heed thereto according to thy word.”

Proverbs 20:9

“Who can say, I have made my heart clean, I am pure from my sin?”