As in chapters 1-9, the writer began this section of the book with an exhortation to hear and give heed to the words of wisdom that follow (22:17-21).
"This extended introduction reminds us that the wise sayings were not curiosity pieces; they were revelation, and revelation demands a response."159
First, there is a call (v. 17) followed by three motivations: a pleasing store of wisdom (v. 18), a deeper trust in the Lord (v. 19), and a greater reliability (vv. 20-21).160
The Hebrew word translated "excellent things"(v. 20; slswm) has also been rendered "heretofore"(RV margin), "triply"(Septuagint, Vulgate), and "30 sayings"(RSV, NIV). Since 30 sayings follow, that seems to be the best option for translation. "Him who sent you"(v. 21) is probably the original reader's teacher, who may have been his father.
"Notwithstanding the difficulties of the text, the general thought of the paragraph is plain: the pupil is to devote himself to study, in order that his religious life may be firmly established, and that he may be able to give wise counsel to those who seek advice."161
