 They had five children together.A documentary about Knudsen and his life premiered at Norwegian cinemas in March 2014 titled "En prest og en plage", which portrayed the aging Knudsen in a close-up personal and somewhat more sympathetic light.Considered a generally somewhat more respected figure among the Norwegian anti-abortionists, some long-time critics of Knudsen voiced their respect for his dedication and for his hymn poetry after his death.