Complex sentence: From 1977 until his death in 1999 he made over one hundred trips to the Middle East, his interests widening to take in a wide variety of references from the Old and New Testaments.
Split into simpler sentences: From 1977 until his death in 1999 he made over one hundred trips to the Middle East. His interests widening to take in a wide variety of references from the Old and New Testaments.