Faith is the means by which man encounters the living God through Jesus Christ in the Holy Spirit. Francis draws on key themes of his predecessor, Pope Benedict XVI, who wrote encyclicals on charity and hope. He intended to complete the set with a reflection on faith, which would also have underscored the Year of Faith that he launched. Benedict's history-making retirement meant he was unable to finish his encyclical. Francis took up the task, adding his own insights, themes, and emphases to the work begun by Benedict XVI.