The interpretation timeline
Joshua 2:5 Douay-Rheims

And at the time of shutting the gate in the dark, they also went out together. I know not whither they are gone: pursue after them quickly, and you will overtake them.

A.D. 407 – 1871 6 witnesses

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"By faith Rahab the prostitute did not perish with those who were disobedient, having received the spies, but she directed their departure by another road." And pay attention to how much wisdom she blended with her prudence. When those sent by the king came and requested the spies, they ask her, "Did men enter in here and come near you?" She answers them, "Yes, they entered in." First she builds the truth, and then she applies the lie on top. For no lie like this becomes believable unless it first reveals the truth. For this reason all who tell lies probably to be believed, first speak of truths and reveal confessions and later add the lies and things which are questionable. "Spies entered in here and came near you?" "Yes," she says. If she had said "no" from the beginning, she would have challenged the messengers to investigate. However, "they entered in," she says, "and they came out and escaped by such and such a road. Pursue them and you will capture them." O this good lie! O this good fraud, which does not betray the divine but safeguards the sacred! When the mouths of saints preach the repentance that made Rahab worthy of such salvation, for example, Joshua the son of Nun, who shouts in the desert, "Let Rahab the prostitute live"; and Paul, who says, "By faith Rahab the prostitute did not perish with those who were disobedient," will we not receive salvation even more so when we offer to God our repentance?”
Source
435
A.D.
John Cassian Patristic
c. A.D. 360–435
“This was the case with Rahab. Scripture not only recalls nothing virtuous about her but even speaks of her immorality. Yet for her lie alone, whereby she chose to conceal the spies rather than betray them, she deserved to share an eternal blessing with the people of God. If she had chosen to speak the truth or to be concerned for the safety of her people, there is no doubt that she and her whole household would not have escaped the approaching destruction and that she would not have deserved to be included among those responsible for the Lord's birth, to be numbered on the roll of the patriarchs, and, through her offspring, to beget the Savior of all.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And it came to pass, about the time of the shutting of the gate,.... Of the city, which was done every night, and at a certain time: when it was dark; the sun set, and night come on: that the men went out; out of her house, and out of the city too, as she said, though it was a downright lie, as well as what follows: whither the men went I wot not; though she knew they were not gone, but were now in her house; she might not scruple telling a lie, being brought up a Heathen, and being done with a design to save the lives of persons that belonged to a people she was persuaded were the people of God, and to whom he had given the land; though her lies are not to be justified; evil is not to be done that good may come; nor are men to tell lies one to another upon any account; but these sins, with others, the Lord forgave her: pursue after them quickly, and ye shall overtake them; this she encouraged them to do, to get rid of them the sooner, and to remove all suspicion of her having any respect for them, and of being concerned in concealing them.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“When it was dark - So it appears that it was after night that the king of Jericho sent to Rahab, ordering her to produce the persons who lodged with her. The season itself was friendly to the whole plot: had these transactions taken place in daylight, it is scarcely possible that the spies could have escaped. But this is no excuse for the woman's prevarication, for God could have saved his messengers independently of her falsity. God never says to any, Do evil that good may come of it. See at the end of the chapter, Jos 2:24 (note).”
Source
1849
A.D.
1774–1849
“At the time, not precisely, as otherwise the men who shut the gates must have seen them, but about that time, (Calmet) Rahab pretends that the spies had left her house, and had directed their course towards the gate, so that she made no doubt but they might easily overtake them. (Haydock) — Notwithstanding this officious lie, which is a venial sin, St. Paul and St. James testify that she was justified by her faith in God, and by good works towards these men. See St. Augustine, contra Mend. 17. and note on James ii. 25. (Worthington) — Rahab might suppose that an officious lie was not a sin, (Menochius) as many great and learned men seemed to have maintained this doctrine. See Grotius, Jur. iii. 1. 9.; Origen, contra Cels. iv. p. 171.; St. Chrysostom, hom. 53, Genesis. She was so far from intending to do an injury to any one, that she consulted the welfare both of her guests and of her countrymen, who, if they had detected the spies and committed murder, would have thus brought greater destruction upon themselves, as they could not escape the wrath of God. (Calmet)”
Source
1871
A.D.
1871
“the time of shutting of the gates--The gates of all Oriental cities are closed at sunset, after which there is no possibility either of admission or egress. the men went out--This was a palpable deception. But, as lying is a common vice among heathen people, Rahab was probably unconscious of its moral guilt, especially as she resorted to it as a means for screening her guests; and she might deem herself bound to do it by the laws of Eastern hospitality, which make it a point of honor to preserve the greatest enemy, if he has once eaten one's salt. Judged by the divine law, her answer was a sinful expedient; but her infirmity being united with faith, she was graciously pardoned and her service accepted (Jam 2:25).”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.