The interpretation timeline
Psalm 118:99 Douay-Rheims

I have understood more than all my teachers: because thy testimonies are my meditation.

A.D. 430 – 1849 4 witnesses

Patristic

before A.D. 750
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“But what means the following verse, "I have more understanding than my teachers"? [Psalm 119:99]. Who is he who had more understanding than all his teachers? Who, I ask, is he, who dares to prefer himself in understanding above all the Prophets, who not only by speaking taught with so excellent authority those who lived with them, but also their posterity by writing?...What is here said, could not have been spoken in Solomon's person....I recognise plainly Him who had more understanding than His teachers, since when He was a boy of twelve years of age, Jesus remained behind in Jerusalem, and was found by His parents after three days' space, "sitting in the temple among the doctors, hearing them and asking them questions." [Luke 2:42-46] The Son Himself has said, "As My Father has taught Me, I speak these things." [John 8:28] It is very difficult to understand this of the Person of the Word; unless we can comprehend that it is the same thing for the Son to be taught as to be begotten of the Father...."He took upon Himself the form of a servant;" [Philippians 2:7] for when He had assumed this form, men of more advanced age might think Him fit to be taught as a boy; but He whom the Father taught, had more understanding than all His teachers. "For Your testimonies," He says, "are my study." For this reason He had more understanding than all His teachers, because He studied the testimonies of God, which, as concerning Himself, He knew better than they, when He spoke these words: "You sent unto John, and he bore witness unto the truth. But I receive not testimony from man," etc. [John 5:33-36]”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“are my conversation All my conversation was about them.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“How sweet are thy words unto my taste!.... Who had a spiritual one; and could discern perverse things, and could taste how good and gracious the Lord is: and so his words were sweet unto him; the doctrines of grace, the truths of the Gospel, were delightful and pleasant to him; like unadulterated milk, desirable by him: like good wine, that goes down sweetly; like good food, that is exceeding palatable; or like honey, and even sweeter than that, as follows. And that words "may be tasted and eaten", is not only agreeable to Scripture language, Jer 15:16; but to classical writers (g); yea, sweeter than honey to my mouth; not only had they the nourishing nature and the refreshing virtue of honey, but the sweetness of it; yea, exceeded it in sweetness; see Psa 19:10. (g) "Mea dicta devorato", Plauti Asinaria, Act. 3. Sc. 3. v. 59. "Edi sermonem tuum", ib. Aulularia, Act. 3. Sc. 6. v. 1. "Gustare ego ejus sermonem volo", ib. Mostellaria, Act. 5. Sc. 1. v. 15.”
Source
1849
A.D.
1774–1849
“Teachers. Who do not follow the rules of virtue. The ancients, (ver. 100.) of the same description, must yield the palm to those who are less advanced in years, but more observant of God’s law. (Worthington)”
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.