How do we know God's chosen ones are secure?

The security of God's chosen people is grounded in His covenant promises. As seen in Isaiah 41:10, God expresses the assurance that He will strengthen, help, and uphold His people. This promise is not conditional upon human effort but is rooted in God's grace and sovereignty. Moreover, the declaration that He will not cast away those He has chosen reinforces the idea that their salvation and perseverance are guaranteed by His power, not by their own actions. The historic Reformed understanding emphasizes that those whom God calls will ultimately be kept by His grace.