Independent Fundamental Churches affirm Matthew 28:19 as the authentic Great Commission, including the Trinitarian baptismal formula. Baptism is administered in the name of the Father, Son, and Holy Spirit, affirming the classical doctrine of the Trinity. This formula is understood as establishing the trinitarian context of Christian initiation and entry into the church.

Baptism by immersion upon faith in Christ is practiced, and the Trinitarian formula marks the convert's commitment to the triune God. The Great Commission authority is grounded in the risen Christ's command to make disciples and baptize them in the Trinitarian name.