Andrew served as part of a Focus team among the unreached Laarim people of South Sudan, seeking to share the gospel in creative ways.

He began serving among the Laarim in South Sudan in August 2015. The Laarim people live in the Boya mountain range approximately 250km east of Juba. Andrew is focused on language and culture learning, and building mutual trust and respect with the Laarim people. As these relationships develop, Andrew shared the truth about Jesus with them, discipling them in how to live as Christians in a culture dominated by traditional religion.

Andrew also guided the Laarim in the crafting of Scriptural songs: the transforming words of the Bible in their heart language, attached to their heart music.