I am very familiar with this Philippians commentary from The Bible Speaks Today Series (IVP). I loved the commentary and found his writing and perspective and understanding deep and penetrating but accessible.
Motyer's area of focus is the links between OT and NT. He gives the reader a deep and insighful and personally meaningful discussion of the text, pointing out the meaning of the words in the original languages when it is helpful to our growth. I would love to read other things by Alec Motyer. Totally recommend for pastors and teachers as well as small groups interested in a good deep read of the book.