The interpretation timeline
Acts 4:21 Douay-Rheims

But they threatening, sent them away, not finding how they might punish them, because of the people; for all men glorified what had been done, in that which had come to pass.

A.D. 407 – 1871 7 witnesses

Patristic

before A.D. 750
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"So when they had further threatened them, they let them go, finding nothing how they might punish them, because of the people: for all men glorified God for that which was done." Again they threatened in vain. So then the people glorified God, but these endeavored to destroy them: such fighters against God were they! Whereby they made them more conspicuous and illustrious. "For My strength," it is said, "is made perfect in weakness."”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“So when they had further threatened them,.... Either repeated the same, as before; or added some more severe ones, to terrify them, if possible; not being able to answer their arguments, or invalidate their reasoning: they let them go; they did not acquit them as innocent persons, but dismissed them from custody: finding nothing how they might punish them; not being able, though they sought most diligently for it, to fix anything upon them, which might be a cause, or occasion, or pretence of inflicting any punishment upon them: because of the people: they would not have stuck at the injustice of it, or have been under any concern about offending God; but they were afraid of the people, of losing their credit among them, and lest they should rise up against them, and on the side of the apostles: for all men glorified God for that which was done; they saw the hand of God in it, and ascribed it to his mercy, goodness, and power, and gave him the glory of it; and therefore to punish the instruments of so great and good a work, would have been esteemed barbarous and wicked, and would have been highly resented by them; since, on the contrary, they judged them worthy of great honour and respect.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“When they had farther threatened them - Προσαπειλησαμενοι, When they had added to their former threatenings, repeating the former menaces, and adding new penalties. Finding nothing how they might punish them - Or, as the Codex Bezae reads, μηεὑρισκοντες αιτιαν, πως κολασωνται, not finding a cause why they might punish them. This reading is supported by the Syriac and Arabic. Bp. Pearce says, "This is better sense and better Greek." Because of the people - The people saw the miracle, confessed the finger of God, believed on the Lord Jesus, and thus became converts to the Christian faith; and the converts were now so numerous that the sanhedrin was afraid to proceed to any extremities, lest an insurrection should be the consequence.”
Source
1849
A.D.
1774–1849
“Threatening them. Here commences the history of the first persecution of religious opinion, which the passions of men have continued, and swelled to such a frightful length. But on this, as on all other occasions, it has defeated its own purpose, by adding firmness and constancy to the persecuted. Truth is not to be overpowered by violence. In vain have the kings and princes of the earth risen up against the Lord, and against his Christ. — When will men learn, that charity is the principle of conversion! — That is an unheard-of kind of preaching, said the great Pope, St. Gregory, which exacts belief by stripes. He was on this occasion reprehending the false zeal of certain indiscreet Christians at Rome, who were for compelling the Jews to become converts. (Haydock) — The amiable Fenelon, in a letter to Prince Charles, the son of our James the Second, says: “No human power can force the impenetrable intrenchments of the human mind. Compulsion never persuades—it only makes hypocrites. When kings interfere in matters of religion, they do not protect it; they enslave it. Give civil liberty to all; not by approving all religions, as indifferent, but, by permitting in others, what God permits.””
Source
1863
A.D.
1796–1863
“G. P. " Glorified God for that which was done." The Vulgate probably com- bines two versions of the same clause.”
1871
A.D.
1871
“finding nothing how they might punish them, because of the people--not at a loss for a pretext, but at a loss how to do it so as not to rouse the opposition of the people.”

Undated

date unknown
date
unknown
Glossa Ordinaria Medieval
“They glorified. In the Greek: All glorified in that which was done: and it does not read, in that which had happened. Deeds or words are glorified when, as report spreads them abroad, they are brought to the knowledge of very many. But God is glorified in the deeds of men, which is proper to Christian piety and humility, he himself saying: Let them see your good works, and glorify your Father, who is in heaven.”
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.