Parshas Behar by Blimi Olen
In parshas behar we are warned not to take נשך, interest.
The word נשך, interest, has the same numerical value as זה נחש, this is a snake.
נ=50 + ש =300 + ך=20 = 370
ז=7 + ה=5 = 12
נ=50 + ח=8 + ש=300 = 358
358 +12 = 370
What is the comparison between interest and a snake? One similarity is that interest is compared to the bite of a snake. Just as a snake bites a small bite, but then the poison spreads and the victim becomes very ill, or even dies, so too, interest starts out small but eventually it builds up and depletes a person of all his money.