How do we know that salvation is secure in Christ?

The assurance of salvation in Christ rests upon His declaration that 'My sheep hear my voice, and I know them, and they follow me. I give them eternal life, and they will never perish, and no one will snatch them out of my hand' (John 10:27-28). This promise underlines the security that comes from being known by Christ and being His sheep. Furthermore, the work of Christ on the cross guarantees that those whom the Father has given to Him will be kept safe and secure throughout eternity. Thus, upon genuine faith in Christ, a believer can confidently trust in the sufficiency of His sacrifice and the guarantee of eternal life.