Joshua 2:8

And before they were laid down, she came up unto them upon the roof;

a. NLT: Before the spies went to sleep that night, Rahab went up on the roof to talk with them. [Scripture quotations marked (NLT) are taken from the Holy Bible, New Living Translation, copyright © 1996, 2004, 2007. Used by permission of Tyndale House Publishers Inc., Carol Stream, Illinois 60188. All rights reserved.]

b. YLT: And -- before they lie down -- she hath gone up unto them on the roof, [The Young's Literal Translation was translated by Robert Young, who believed in a strictly literal translation of God's word. This version of the Bible is in the public domain.]

c. ASV: And before they were laid down, she came up unto them upon the roof; [Thomas Nelson & Sons first published the American Standard Version in 1901. This translation of the Bible is in the public domain.]

d. Amplified Bible Classic: Before the two men had lain down, Rahab came up to them on the roof, 

e. Rubin Edition/ Joshua: They had not yet gone to sleep when she came up to them on the roof.  [The Artscroll Series/Rubin Edition The Prophets: Joshua/Judges Copyright 2000 by Mesorah Publication, Ltd.] 

1. “And before they were laid down…”

a. [And] before [Strong: 2962 terem teh'-rem from an unused root apparently meaning to interrupt or suspend; properly, non-occurrence; used adverbially, not yet or before:--before, ere, not yet.]

b. they [Strong: 1992 hem haym or (prolonged) hemmah {haym'-maw}; masculine plural from 1981; they (only used when emphatic):--it, like, X (how, so) many (soever, more as) they (be), (the) same, X so, X such, their, them, these, they, those, which, who, whom, withal, ye.]

c. laid down [Strong: 7901 * shakab shaw-kab' a primitive root; a primitive root; to lie down (for rest, sexual connection, decease or any other purpose):--X at all, cast down, ((lover-))lay (self) (down), (make to) lie (down, down to sleep, still with), lodge, ravish, take rest, sleep, stay.]

1). From the text it appears they were going to get some sleep before they would leave the city. Whether they did or not is unclear because it seems that after Rahab talked to the spies and made the vows, she helped them escape out her window on the wall of the city.

2. “…she came up unto them upon the roof.”

a. she [Strong: 1931 huw' hoo of which the feminine (beyond the Pentateuch) is hiyw {he}; a primitive word, the third person pronoun singular, he (she or it); only expressed when emphatic or without a verb; also (intensively) self, or (especially with the article) the same; sometimes (as demonstrative) this or that; occasionally (instead of copula) as or are:--he, as for her, him(-self), it, the same, she (herself), such, that (...it), these, they, this, those, which (is), who.]

b. came up [Strong: 5927 * `alah aw-law'; a primitive root; to ascend, intransitively (be high) or actively (mount); used in a great variety of senses, primary and secondary, literal and figurative (as follow):--arise (up), (cause to) ascend up, at once, break (the day) (up), bring (up), (cause to) burn, carry up, cast up, + shew, climb (up), (cause to, make to) come (up), cut off, dawn, depart, exalt, excel, fall, fetch up, get up, (make to) go (away, up); grow (over) increase, lay, leap, levy, lift (self) up, light, (make) up, X mention, mount up, offer, make to pay, + perfect, prefer, put (on), raise, recover, restore, (make to) rise (up), scale, set (up), shoot forth (up), (begin to) spring (up), stir up, take away (up), work.]

c. unto [them] [Strong: 5921 `al al properly, the same as 5920 used as a preposition (in the singular or plural often with prefix, or as conjunction with a particle following); above, over, upon, or against (yet always in this last relation with a downward aspect) in a great variety of applications (as follow):--above, according to(-ly), after, (as) against, among, and, X as, at, because of, beside (the rest of), between, beyond the time, X both and, by (reason of), X had the charge of, concerning for, in (that), (forth, out) of, (from) (off), (up-)on, over, than, through(-out), to, touching, X with.]

d. upon [Strong: 5921 `al al properly, the same as 5920 used as a preposition (in the singular or plural often with prefix, or as conjunction with a particle following); above, over, upon, or against (yet always in this last relation with a downward aspect) in a great variety of applications (as follow):--above, according to(-ly), after, (as) against, among, and, X as, at, because of, beside (the rest of), between, beyond the time, X both and, by (reason of), X had the charge of, concerning for, in (that), (forth, out) of, (from) (off), (up-)on, over, than, through(-out), to, touching, X with.]

e. the roof [Strong: 1406 * gag gawg: probably by reduplication from 1342; a roof; by analogy, the top of an altar:--roof (of the house), (house) top (of the house).]