Pastor Sullivant was saved at the age of 15 during a revival service in Kansas City, Missouri. He heard a message on hell and knew that he was in need of salvation. At the age of sixteen his youth group from Kansas, took a trip to a camp at Lake of the Woods, Ontario and it was during that week he surrendered to God's will for his life. He knew that God called him to preach and that one day he would be serving the Lord in the great Land of Canada.

After completing Bible College, he and his wife Brenda along with five of their eight children (three later born in Canada), came to Manitoba in September of 1988. On December 12 of that same year, the first service for the Pembina Valley Baptist Church was held.

Pastor Sullivant has assisted in the starting of six churches, but the need to train young men became a great concern to him in 1995, when he and the members of Pembina Valley Baptist Church determined to start Canadian Baptist Bible College. God has greatly blessed.

Gary trusted Christ as his Saviour at the age of twelve at a summer Bible Camp in 1974. He and his wife Lisa were married in February 1989, and have lived in Morden, Manitoba since that time. They began attending the Pembina Valley Baptist Church a year after it's inception, and started working with the youth shortly after.

Late in 1995, God called Brother Gary to full time service and he applied to Canadian Baptist Bible College for the first semester of classes scheduled to begin in the fall of 1996. On May 7, 2000, he graduated with a Graduate of Theology Diploma from CBBC. He has served as Assistant Pastor of the Pembina Valley Baptist Church since June of 1999.