THE PRIMARY REASON
The Lord is at work in your heart giving you the desire to help others come to experience what you have in Jesus Christ. He wants to see others come to experience the benefits of a personal relationship with Him. And because of His love, He wants to save others from the unnecessary hardships apart from that relationship both now and forever.
ONCE WE KNOW WHY WE SHOULD EVANGELIZE, WE'LL FIND A WAY TO DO IT!!!