When you give someone your time, you are giving them a portion of your life that you'll never get back. Your time is your life. That is why the greatest gift you can give someone is your time.
The Purpose Driven Life is a bible study book written by Christian pastor Rick Warren and published by Zondervan in 2002. The book offers readers a 40-day personal spiritual journey and presents what Warren says are God's five purposes for human life on Earth.