'Even' in the Bible

Won't the day of Yahweh be darkness, and not light? Even very dark, and no brightness in it?

"When a man's relative carries him, even he who burns him, to bring bodies out of the house, and asks him who is in the innermost parts of the house, 'Is there yet any with you?' And he says, 'No;' then he will say, 'Hush! Indeed we must not mention the name of Yahweh.'

They will wander from sea to sea, and from the north even to the east; they will run back and forth to seek the word of Yahweh, and will not find it.