Complex sentence: Christian New Testament teaching emphasized the need for "inclusion with care" See Luke 17:11-19--where Jesus heals ten lepers while in contrast, the Third Council of the Lateran (1179) of the medieval Western Christian Church subscribed to a policy of exclusion.
Split into simpler sentences: Christian New Testament teaching emphasized the need for "inclusion with care". Second, and in contrast, Third Council of the Lateran (1179) of the Medieval Western Christian Church subscribed to a policy of exclusion.