Complex sentence: His political views, the conflicts regarding the liturgy and his dismissal of celibacy lead to Oosterhuis being expelled from the Catholic order Society of Jesus in 1969 and he started to focus on writing liturgy, religious music, and poetry.
Split into simpler sentences: His political views, the conflicts regarding the liturgy and his dismissal of celibacy lead to Oosterhuis being expelled from the Jesuit order in 1969. He started to focus on writing liturgy, religious music, and poetry.