The interpretation timeline
Luke 3:10 Douay-Rheims

And the people asked him, saying: What then shall we do?

A.D. 253 – 1871 9 witnesses 12 excerpts

Patristic

before A.D. 750
253
A.D.
Origen Patristic
c. A.D. 184–253
“Three classes of men are introduced as enquiring of John concerning their salvation, one which the Scripture calls the multitude, another to which it gives the name of Publicans, and a third which is noticed by the appellation of soldiers.”
390
A.D.
A.D. 329–390
“(Orat. 19.) For by wages he refers to the imperial pay, and the rewards assigned to distinguished actions.”
397
A.D.
Ambrose of Milan Patristic
A.D. 339–397
“For other commands of duty have reference only to individuals, mercy has a common application. It is therefore a common commandment to all, to contribute to him that has not. Mercy is the fulness of virtues, yet in mercy itself a proportion is observed to meet the capacities of man’s condition, in that each individual is not to deprive himself of all, but what he has to share it with the poor.”
Source
“Teaching thereby that wages were affixed to military duty, lest men seeking for gain should go about as robbers.”
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“(Hom. in Matt. 24.) Great is the force of virtue that makes the rich seek the way of salvation from the poor, from him that hath nothing.”
“(Hom. in Matt. 11.) But John’s desire when he spoke to the Publicans and soldiers, was to bring them over to a higher wisdom, for which as they were not fitted, he reveals to them commoner truths, lest if he put forward the higher they should pay no attention thereto, and be deprived of the others also.”
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“(cont. Faust. lib. xxii c. 74.) For he knew that soldiers, when they use their arms, are not homicides, but the ministers of the law; not the avengers of their own injuries, but the defenders of the public safety. Otherwise he might have answered, “Put away your arms, abandon warfare, strike no one, wound no one, destroy no one.” For what is it that is blamed in war? Is it that men die, who some time or other must die, that the conquerors might rule in peace? To blame this is the part of timid not religious men. The desire of injury, the cruelty of revenge, a savage and pitiless disposition, the fierceness of rebellion, the lust of power, and such like things are the evils which are justly blamed in wars, which generally for the sake of thereby bringing punishment upon the violence of those who resist, are undertaken and carried on by good men either by command of God or some lawful authority, when they find themselves in that order of things in which their very condition justly obliges them either to command such a thing themselves, or to obey when others command it.”
Source
604
A.D.
Gregory the Great Patristic
c. A.D. 540–604
“(ubi sup.) In the preceding words of John, it is plain that the hearts of his hearers were troubled, and sought for advice from him. As it is added, And they asked him, saying, &c.”
“(ubi sup.) For because it was written in the law, Thou shalt love thy neighbour as thyself, he is proved to love his neighbour less than himself, who does not share with him in his distress, those things which are even necessary to himself. Therefore that precept is given of dividing with one’s neighbour the two coats, since if one is divided no one is clothed. But we must remark in this, of how much value are works of mercy, since of the works worthy of repentance these are enjoined before all others.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And the people asked him,.... Not the same as in Luk 3:7 the Sadducees and Pharisees, for they seemed not to be at all affected with, and wrought upon, by the ministry of John; but rather were displeased with him, and turned their backs on him, and rejected him and his baptism; but the common people, that stood by; who hearing John speak of wrath to come, and of repentance, and fruits worthy of it, were filled with concern about these things, and inquire, saying, what shall we do? either to escape the wrath and vengeance coming on the nation, and also eternal ruin and destruction; and Beza says, that in two of his copies, and one of them his most ancient one it is added, "to be saved", and so in two of Stephens's; which confirms the above sense, and makes their inquiry to be the same with the jailor's, Act 16:30 or else their meaning is, what are the things we are to do, or the fruits we are to bring forth, the duties we are to perform, in order to testify the truth and genuineness of our repentance? which latter seems most agreeable.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“What shall we do then? - The preaching of the Baptist had been accompanied with an uncommon effusion of that Spirit which convinces of sin, righteousness, and judgment. The people who heard him now earnestly begin to inquire what they must do to be saved? They are conscious that they are exposed to the judgments of the Lord, and they wish to escape from the coming wrath.”
Source
1871
A.D.
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.