Exodus 15:23

23When they came to aMarah, they could not drink the water of Marah because it was bitter; therefore it was named Marah.
 Marah means bitterness

Jeremiah 9:15

15Therefore thus says the Lord of hosts, the God of Israel: cBehold, I will feed this people with bitter food, and give them dpoisonous water to drink.

Jeremiah 23:15

15Therefore thus says the Lord of hosts concerning the prophets:
eBehold, I will feed them with bitter food
fand give them gpoisoned water to drink,
for from the prophets of Jerusalem
ungodliness has gone out into all the land.”
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