In addition to his legislative duties, Knight is an auctioneer and small business owner.

Born in Lebanon, Missouri, in 1968, Knight graduated from Lebanon High School before attending the University of Missouri and Southwest Missouri State, from where he holds a Bachelor's Degree in Science Education. For 25 years, Knight taught and coached in schools in Ozark, Nixa, Lebanon and Camdenton.

He is a member of the local Rotary International, the Lebanon and Buffalo Area Chambers of Commerce, First Baptist Church of Lebanon, and he serves as a board member for Heart of the Ozarks Fellowship of Christian Athletes. He is also a member of Missouri Farm Bureau, Missouri Cattlemen's Association, National Rifle Association, and National Wild Turkey Federation.

Knight has been recognized by the Missouri Farm Bureau as a Friend of Agriculture and by the Missouri Chamber of Commerce as a member of the 100% Club. He has also received recognitions from Missouri Cattlemen as Legislator of the Year 2018, Missouri Sheriff's Association 2021, Missouri Co-ops Legislative Leader Award 2021, Missouri Corn Public Servant Award 2022, and MPRA Public Achievement Award 2022.

Knight resides in Lebanon, along with his wife, Amy. They have two children, Savanna and Jordan.