What does Ecclesiasticus Chapter 51 say, and which statements belong to its speaker?

Ecclesiasticus 51 opens with Jesus son of Sirach's prayer of thanks to the Lord, King and Saviour. He recalls protection against lying lips, an unjust tongue, people ready to devour him, threats to life, fire, the depths of hell and an unjust king. Death draws near and no human helper appears. Remembering mercy from the world's beginning, he prays that death pass and addresses the Lord as father of his lord. Deliverance from the evil time prompts continual praise. These remain his recollections and prayer.

The speaker then recalls seeking wisdom in youth, before wandering, through prayer in the temple. Early ripening grapes express delight; a little listening brings much wisdom and inward profit. He resolves to do good, wrestles in soul, raises hands and laments ignorance. Finding knowledge and possessing it involve trouble and perseverance, followed by thanksgiving.

The unlearned are invited into the house of discipline to buy without silver, place its yoke on their necks and receive nearby instruction. Little labor is compared with much rest; discipline is urged as a great sum of money and as gold. Joy and mercy lead to praise. Work should come before the appointed time, with reward in God's time. The invitation does not establish an effortless or immediate guarantee.