en_tn_condensed/jer/42/15.md

Now

The word "now" does not mean "at this moment," but is used to draw attention to the important point that follows.

to this word of Yahweh

"to Yahweh's message"

Yahweh of hosts ... says this

Jeremiah often uses these words to introduce an important message from Yahweh. See how you translated this in Jeremiah 6:6.

set out to go to

"depart for" or "leave for"