How do we know the gospel is the primary landmark of faith?

The New Testament affirms that the gospel is not just one avenue among many, but the singular pathway to God. This is highlighted in passages such as Galatians 2:5, where Paul emphasizes that the truth of the gospel must be preserved. The gospel, which reveals the finished work of Christ and our need for grace, is likened to a boundary marker that defines the true faith. Without this foundation, any attempt to approach God through works or alternate means lacks substance and purpose. Ultimately, the gospel is the eternal landmark set by God before the foundation of the world, providing a stable anchor for our hope and inheritance.