Complex sentence: Grey's sympathies were wholly with the evangelical portion of the church, then gradually acquiring position and power, and his earnest piety, fine talents, and attractive appearance and manner soon won for him attention and preferment.
Split into simpler sentences: Grey's sympathies were wholly with the evangelical portion of the church, then gradually acquiring position and power. His earnest piety, fine talents, and attractive appearance and manner soon won for him attention and preferment.