Complex sentence: A second, expanded version, "Wolli Hesol", or "Explanation of the Divine Principle", was published in 1957 and finally, its most propagated text, the "Exposition of the Divine Principle" was published in 1966.
Split into simpler sentences: A second, expanded version, "Wolli Hesol", or "Explanation of the Divine Principle", was published in 1957. Finally, its most propagated text, the "Exposition of the Divine Principle" was published in 1966.