Psalms 51:5

Psalms 51:5. Behold, I was shapen in iniquity; and in sin, did my mother conceive me.

The black stream leads him to look at the black fountain. How can we expect from parents who have sinned that there should be born unto them pure and spotless children. No! the tendencies in us all towards evil are there at the very first. He does not at all venture to excuse himself, but rather to aggravate his sin, that he had been a sinner from his very birth.