[1][2] Billings has lectured in Europe, South Africa, and the United States, and has published in a variety of journals, including Modern Theology, Harvard Theological Review, Missiology, and International Journal of Systematic Theology, as well as periodicals such as Christianity Today,[3][4] The Christian Century,[5] and Sojourners.
In order to be a pastor, he studied in Fuller Theological Seminary, graduating with an M.Div.
At Fuller Theological Seminary, he was particularly influenced by professors Miroslav Volf and John L. Thompson.
At Harvard Divinity School, he was taught by Sarah Anne Coakley, a distinguished scholar in historical and systematic theology, and received a Th.D for Calvin, Participation, and the Gift: The Activity of Believers in Union with Christ.
He is married to Rachel M. Billings, who holds a Ph.D. in Hebrew Bible/Old Testament from Harvard University.