Complex sentence: In practice, as noted above, in churches with mixed congregations, blacks were made to sit in segregated seating, and white preaching sometimes quoted Biblical stipulations that slaves should accept their places and try to behave well toward their masters.
Split into simpler sentences: In practice, as noted above, in churches with mixed congregations, blacks were made to sit in segregated seating. White preaching often emphasized Biblical stipulations that slaves should accept their places and try to behave well toward their masters.