Joosten completed his studies in 1981 in Brussels. His areas of interest are the Septuagint, Syriac versions of the Bible, a biblical manuscript found at Qumran, and the Diatessaron. He was a pastor for six years in Belgium. He was, until June 2020, also a member of the Society of Biblical Literature. He is considered one of the most distinguished biblical scholars of his generation.
On June 18, 2020, Joosten was sentenced by the Savernecriminal court to one year in prison and placed on the sex offender registry in France for holding 27,000 images and one thousand videos of child pornography, including images of children being raped. Joosten admitted to offences dating from 2014 to May 2020 after being exposed by Strasbourg LION as part of a lengthy investigation. He was 'relieved to be arrested'. He described his addiction to pornographic images and videos of children as a "secret garden" that contradicted who he is as a person. On his conviction, he was not immediately incarcerated. His sentence would be supervised, and he would have to complete a three-year programme of treatment. He was prohibited from any activity bringing him into contact with minors. Joosten has four children. Rémi Gounelle, the Dean of the Faculté de théologie protestante de Strasbourg, released this statement following Joosten's arrest: “Nous sommes tous tombés de haut. Il n’y avait aucune suspicion de ce genre, aucun problème avec les étudiants. C’est une affaire moralement très choquante mais qui ne remet pas en cause les grandes compétences pédagogiques et scientifiques de Jan Joosten. C’est surtout profondément triste. Jan est tombé dans une forme d’addiction dont il n’a pas réussi à sortir. Il luttait contre ses pulsions négatives sans parvenir à y échapper. Cela nous montre la complexité de l’être humain. Jan est un collègue très apprécié et il vivait avec ça. Cela rend humble de découvrir cette addiction, cette fragilité.” Gounelle argued that, whilst the unmasking of Joosten as a paedophile was deeply shocking, it does not call into question his pedagogical and scientific skills. In a public statement that noted his "shocking crimes and... the suffering endured by those in the images he accessed," Oxford University announced Joosten's removal from employment, removal as trustee of Christ Church, and disaffiliation from the institution.
"People and Land in the Holiness Code. An Exegetical Study of the Ideational Framework of the Law in Leviticus 17–26", Supplements to Vetus Testamentum 67
"Édition des actes du colloque Aspects de la Bible grecque", dans la Revue des Sciences Religieuses 280, pp. 132–228.
En collaboration avec Eberhard Bons et Stephan Kessler, Les Douze Prophètes. Osée, La Bible d'Alexandrie 23, 1.
"En collaboration avec Philippe Le Moigne, L'apport de la Septante aux études sur l'Antiquité". Actes du colloque de Strasbourg 8 et 9 novembre 2002, Lectio Divina 203.
