Teaching Ruth & Esther, From Text to Message by Christopher Ash and published by Christian Focus Publications.
Ruth and Esther are two prophetic pictures of the same gospel. One speaks of a last-minute rescue from death, the other of a long-awaited filling of a terrible emptiness. One ends with a baby; the other concludes with an annual remembrance of an amazing escape. But neither really ends, until they find their fulfilment in Jesus Christ. Part of the Teaching series, this book is designed to help the pastor/preacher, small group leader, or youth worker in preparing and presenting studies.