Jack L. Buist, aged 89 of Byron Center, went to be with his Lord on Easter Sunday, April 4, 2021. Jack loved his Lord and Savior Jesus Christ. He served his country in the US Army during the Korean conflict. Jack loved his career in business, especially the last twenty years of owning Interphase. During his career he made many life-long friends. Jack was a family man and loved spending time with his children and grandchildren. He enjoyed baking and cooking for his friends and family, making many deliveries in order to share his love for others. Jack is survived by his wife of 69 years, Marge; children, Tom and Carol, Pam and Mark Zietse, Tim and Gloria; grandchildren and great-grandchildren, Marc and Renaul Buist (Carson, William, Addelaide), Michael and JoAnne Buist (Jack, Annelise, Kenzie), Nathan and Catherine Zietse, Nora and Josh Laarman (baby girl Laarman), Heather and Kevin Keil (Owen, Eli), TJ and Amanda Buist (Tenley, Connor), Kelsey and Ben DeGroot (Grady, Mabel); sister, Marge VandenBerg; and many nieces and nephews. He was preceded in death by his parents, John and Mattie Buist; parents-in-law, Charlie and Jenny Tiesma; siblings, Sam Buist, Jay and Betty Buist, Joyce and John Seif; siblings-in-law, Bill and Jo Tiesma, Pete and Anne Tiesma, Frank and Barb Tiesma, Eleanor VanDam, and Lee Valkema. Funeral services for Jack will be held on Tuesday, April 13 at 11:00 a.m. at Hillside Community Church, 1440 - 68th Street SE, Grand Rapids, with Pastor Ron Kool and Pastor Daniel Bud officiating. Relatives and friends may meet the family at the church on Monday from 3 - 7 p.m. and on Tuesday from 10-10:45 a.m. prior to the service. Burial will be held at Blain Cemetery. The family suggests memorial contributions may be made to Dutton Christian School, Potters House, or South Christian High School.