Joshua son of Sirach is from the generations that are near to the Lord (i.e. approx 200 years before Christ) - originally in Hebrew but was immediately translated to Greek in the Septuagint
Canonical Book
Read from a lot in the Great Lent Lectionary
St Athanasius, Origen, St Clement all quoted extensively from the Book of Sirach
51 Chapters
1-44: Talking about Wisdom and Virtue
Fear of God, Humility, Love of others, Honoring parents, Having mercy
Also the opposite
44-50: Veneration of the Biblical Characters (Moses, Joshua, Elijah, Josiah, Nehemiah, etc.)
51: Prayer of Joshua Son of Sirach
Headlines
Chapter 2
My son, if you draw near to serve the Lord, Prepare your soul for temptation.
The devil likes to attack those who serve more than others, because of his jealousy
Set your heart right and be steadfast, And do not strive anxiously in distress