The aim of this essay is to examine the significance of the concept of sanctification in biblical theological reflection on economics through a comparative textual study. The theologians analyzed are Albino Barrera, Wayne Grudem, and Kathryn Tanner. In what way are their biblical and systematic theologies of economics related to their understanding of the concept of sanctification? What is the relationship between sanctification and the Bible’s words on economics? In a broader perspective, the essay aims to reflect on how the concept of sanctification can be viewed and enunciated in the light of a capitalist economic system. The theologians used in the essay all have their origins in disparate theological discourses, Christian communities, and academic disciplines. Barrera is a biblical scholar, economist and a priest in the Catholic Church. In Biblical Economic Ethics, Barrera writes an economic theology with an emphasis on social justice. Grudem is a Calvinist Baptist biblical scholar and systematic theologian, active in conservative evangelical theological discourse. In Politics according to the Bible, Grudem presents his biblical theology on politics and society. Tanner is a systematic theologian in the Episcopal Church, active in the disciplines of feminist and constructive theology. In Christianity and the New Spirit of Capitalism, she critiques the economic paradigm she describes as the new spirit of capitalism. Barrera, Grudem, and Tanner all make different readings of what the Bible has to say about economic life. Grudem actively endorses the economic system of today, while Barrera and Tanner have a more critical voice. Barrera sees sanctification as a gift of divine friendship from God. Grudem views sanctification as what comes after conversion from sin and the blessings granted by God. Tanner means that sanctification takes place through the work of the Spirit and by Jesus’ gift of a life in holiness. Through the essay a connection has been established between a person’s view on sanctification and their biblical theology on economics. Barrera’s, Grudem’s, and Tanner’s biblical theology on economics is closely connected to their understanding of the concept of sanctification. There seems to be a connection between the biblical material that is being analyzed, how it is analyzed, and what is being left out. A central finding in the essay is the connection between the understanding of sanctification as either a gift or a reward.