Matthew 15:19-20

For from the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false testimonies, blasphemies:

Mark 7:21-23

for from within, from the hearts of men, proceed evil thoughts, fornications,

Treasury of Scripture Knowledge

Summary

And whatsoever the unclean person toucheth shall be unclean; and the soul that toucheth it shall be unclean until even.

Bible References

The soul

Matthew 15:19
For from the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false testimonies, blasphemies:
Mark 7:21
for from within, from the hearts of men, proceed evil thoughts, fornications,