Charles Ellicott Commentary Psalms 119:66

"Teach me good judgment and knowledge; For I have believed in thy commandments." — Psalms 119:66 (ASV)

TETH.

Good judgment. —More exactly, good taste. Here, however, in a moral, not aesthetic sense. Perhaps tact or delicate moral perception represents it. We may compare St. Paul’s use of the Greek words, ἐπιγνώσις and αἴσθησις in Philippians 1:9.