Complex sentence: Saudi Arabia allows Catholics and Christians of other denominations to enter the country as foreign workers for temporary work, but does not allow them to practise their faith openly, and as a result Catholics and Christians of other denominations generally only worship in secret within private homes.
Split into simpler sentences: Saudi Arabia allows Catholics and Christians of other denominations to enter the country as foreign workers for temporary work, but does not allow them to practise their faith openly. As a result, Catholics and Christians of other denominations generally only worship in secret within private homes.