How do we understand the idea of one faith?

Ephesians 4:5 highlights the concept of one faith, which encapsulates the belief that salvation is not from ourselves but a gift from God. This faith is grounded in the recognition that we are saved by grace through faith in Christ alone (Ephesians 2:8-9). It underscores the importance of clinging to the doctrine of Christ's sufficiency for salvation. The church is called to maintain this unity of faith, rejecting any notion that adds to or takes away from the centrality of Christ's work on the cross.