What does the Bible say about being established with grace?

Hebrews 13:9 admonishes believers to not be carried away by diverse and strange doctrines but to be established with grace. This grace refers to the unmerited favor and kindness of God, primarily demonstrated through the person and work of Christ. An established heart understands that salvation is not found in following rules or man-made doctrines, but in a personal relationship with Jesus Christ, who is the embodiment of grace. A heart anchored in grace recognizes Christ as the sole source of salvation, leading to eternal life and true worship.