How do we know God's purpose in salvation is true?

The truth of God's purpose in salvation is woven throughout the fabric of Scripture, particularly in the teachings of Jesus as seen in Luke 10:21-22. Jesus rejoiced in God's sovereign will being accomplished, indicating that all things happen according to His plan. As sovereign grace believers, we interpret the ministry of Jesus and the success of the disciples' preaching as evidence of God's electing grace. The fulfillment of God's purpose is not contingent on human actions but on His divine will, which is highlighted in passages across the New Testament, affirming that God’s purpose is fulfilled according to His righteousness. This unwavering commitment to His plan reassures us of the certainty of His call and purpose.