The problem, obviously, with the Book of Wisdom and was not included with God's 66 books is because you can't add a book from 1500 years later after the first century. Mormons and other cults do the same. This book teaches salvation by works, but the Bible says salvation is not by works, lest anyone should boast.

While Solomon wrote much on the subject of wisdom in Proverbs and Ecclesiastes, he never elevated it to the status of part of the Godhead, a philosophy found in The Wisdom of Solomon. The book refers to Wisdom in terms the Bible reserves for the Messiah, saying, “She [wisdom] is a reflection of eternal light, a spotless mirror of the working of God, and an image of his goodness” (Wisdom 7:26). The book of Hebrews reserves such accolades for the Son of God, who “is the radiance of God’s glory and the exact representation of his being” (Hebrews 1:3). Even more egregious, Wisdom 9:18 says that salvation is an act of wisdom, whereas Scripture is clear that salvation is by faith, a gift of God to those whom He calls, justifies, and sanctifies (Ephesians 2:8–9; Romans 8:30). In fact, if man were to depend upon his “wisdom” for salvation, we would be lost forever with no hope because the unredeemed are dead in trespasses and sin (Ephesians 2:1–4) and their minds are darkened (Ephesians 4:18; 1 Corinthians 2:14) and their heart deceitful and desperately wicked (Jeremiah 17:9).

The apocryphal books are accepted by the Roman Catholic Church because many of the books teach Catholic doctrines that are not in agreement with the Bible, including praying for the dead, petitioning Mary to intercede with the Father, worshiping angels, and alms-giving as atonement for sins. Some of what the Apocrypha/Deuterocanonicals say is true and correct. However, due to the historical and theological errors, the books, including The Wisdom of Solomon, must be viewed as fallible historical and religious documents, not as the inspired, authoritative Word of God.