The interpretation timeline
Sirach 17:15 Douay-Rheims

And Israel was made the manifest portion of God.

1849 – 1863 2 witnesses 3 excerpts

Post-Reformation

c. 1650 – 1900
1849
A.D.
1774–1849
“God. Complutensian adds, “he nourishes him as his first-born with instruction, and dividing the light of love, he does not abandon him.” (Haydock) — But the Roman edition agrees with us. God declared himself king of Israel, (Calmet) and its guardian, while he intrusted other nations to angels. (Origen; St. Augustine; Psalm cxxxviii.; Glossa.; Deuteronomy xxxii. 8.)”
Source
1863
A.D.
1796–1863
“G. P. "Israel is the Lord's portion." God chose Israel to he His people, to govern them by special laws, whilst He left the other nations to be ruled by their respective princes. He is said to have set these over them, because His providence regulates all things. Rom. xiii. 1 . A verse here follows in some Greek copies which is regarded by Grotius as borrowed from some passages of Scripture. Exod. iv. 22.”
Source
“G. P. " Before Him." All are open and manifest to Him, as in tie light of the sun.”
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.