To wean is to bring a child through the period of nursing and early maternal care to its completion. In ancient Israel, children were commonly nursed until about three years of age, after which they were mature enough for broader care.
The weaned child becomes a figure for contentment with God’s care. Completion of weaning could also be marked by a feast, and the term may encompass the whole period of nursing and care.
Hebrew children were generally nursed for three or four years. The completion of this critical stage was celebrated with a feast, and the child could then be entrusted to others.