How do we know God's invitation to salvation is true?

The assurance of God's invitation to salvation lies in His preparation and the efficacy of Christ's atonement. In the parable of the great supper, the master calls everyone to partake, stating, 'Come, for all things are now ready.' This illustrates that God has provided all we need for salvation: forgiveness, cleansing, and the righteousness of Christ. The Holy Spirit's role in drawing sinners to recognize and respond to this gospel call further affirms God's sincerity and truthfulness in His invitation.