What does the Bible say about God's purpose of grace?

The concept of God's purpose of grace is vividly illustrated in the interaction between Jesus and Zacchaeus, as seen in Luke 19:5. It highlights that when Jesus declares, 'I must abide at thy house,' He expresses the necessity of God's will in enacting salvation. This 'must' signifies that salvation is not a matter of human decision alone but is rooted in God's sovereign choice and intent. Just as the sun must shine and humanity must face death, so too must God’s chosen people receive His grace.

In a broader theological context, God’s will operates with eternal certainty. When the Lord decides to act with the 'must' of mercy, no obstacle can prevent Him from saving those whom He has chosen. This principle is foundational to sovereign grace theology, emphasizing that the salvation of sinners is accomplished not by human efforts but through the compelling grace of God. Therefore, the gospel assures us that when Jesus comes to a heart in need, resistance is futile, as His purpose ultimately prevails.