Aaron is the Senior Minister at Westminster Presbyterian Church (PCA) in Atlanta. He served as the Chaplain of Covenant College from 2007 until 2012. Before moving to Covenant, Aaron was the Associate Pastor at Tenth Presbyterian Church in Philadelphia. He received both Bachelors and Masters degrees from Wheaton College and an MDiv from Princeton Theological Seminary in New Jersey. He has authored two articles in the Princeton Theological Review and has worked with the Nehemiah Project in Philadelphia.