How do we know God's people are called?

Jude writes specifically to those who are sanctified by God the Father and preserved in Christ Jesus, emphasizing the divine calling that marks them as His people. The concept of 'calling' involves both a general invitation to all through the preaching of the Gospel and an effectual call by the Holy Spirit that brings about true faith. Scripture supports this with promises that all whom the Father has given to Christ will come to Him, being drawn by the Spirit into fellowship with Him. This acknowledges the sovereignty of God in salvation, ensuring that those whom He has chosen will ultimately respond to His grace.