'Poison' in the Bible

Why [are] we sitting? Gather, and let us go into the fortified cities, and let us perish there, for Yahweh our God has caused us to perish, and has provided drink for us, water of poison, because we have sinned against Yahweh.

Therefore thus says Yahweh of hosts, the God of Israel, "Look, I [am] feeding this people wormwood, and providing drink for them, water of poison,

{Therefore} thus says Yahweh concerning the prophets, "Look, I [am] going to let them eat wormwood and I will give them water of poison to drink, for from the prophets of Jerusalem went out ungodliness to all the land."