Neo-Lutheranism was a 19th-century revival movement within Lutheranism which began with the Pietist driven Erweckung, or Awakening, and developed in reaction against theological rationalism and pietism. This movement followed the Old Lutheran movement and focused on a reassertion of the identity of Lutherans as a distinct group within the broader community of Christians, with a renewed focus on the Lutheran Confessions as a key source of Lutheran doctrine. Associated with these changes was a renewed focus on traditional doctrine and liturgy, which paralleled the growth of Anglo-Catholicism in England. It was sometimes even called "German Puseyism". In the Roman Catholic Church in Germany, neo-Lutheranism was paralleled by Johann Adam Möhler. The chief literary organ of the neo-Lutheranism was Evangelische Kirchenzeitung, edited by Ernst Wilhelm Hengstenberg.
Neo-Lutheranism developed as a reaction against the Prussian Union  in a similar manner to the development of Tractarianism against the British Government's decision to reduce the number of Irish bishoprics. The term has been defined different ways to distinguish it from the Old Lutherans movement, which was a schism in areas where a church union was enforced. Also, a distinction developed in neo-Lutheranism whereby one side held to repristination theology which tried to restore historical Lutheranism, while the other held to the theology of the Erlangen School. The repristination theology group was represented by Ernst Wilhelm Hengstenberg, Carl Paul Caspari, Gustav Adolf Theodor Felix Hönecke, Friedrich Adolf Philippi, and C.F.W. Walther. Repristination theology is more similar to later Confessional Lutheranism. In contrast, confessionalism to the Erlangen School was not to be static, but dynamic. The Erlangen School tried to combine Reformation theology with new learning. The Erlangen School included Franz Hermann Reinhold von Frank, Theodosius Harnack, Franz Delitzsch, Johann Christian Konrad von Hofmann, Karl Friedrich August Kahnis, Christoph Ernst Luthardt and Gottfried Thomasius.
However, neo-Lutheranism is sometimes called only theology and activity represented by Theodor Friedrich Dethlof Kliefoth, August Friedrich Christian Vilmar, Johann Konrad Wilhelm Löhe, August Friedrich Otto Münchmeyer and Friedrich Julius Stahl who had particularly high ecclesiology. They were polemic against idea of invisible church, strongly claiming church as an outward, visible institution of salvation and therefore laid emphasis on ordained ministry instituted by Christ and significance of sacraments above word as Means of Grace. However, unlike the Erlangen School, this neo-Lutheranism did not make lasting influence on Lutheran theology. Properly speaking, High Church Lutheranism began in Germany much later, 1917 the Hochkirchliche Vereinigung Augsburgischen Bekenntnisses was created, inspired by 95 theses Stimuli et Clavi, exactly 100 years after Claus Harms' 95 theses.