What does the Bible say about the great and dreadful day of the Lord?

The term 'the great and dreadful day of the Lord' captures the dual nature of God's unfolding plan of salvation where His glory and holiness are on full display. On one hand, it signifies the coming judgment against the proud and wicked, likened to stubble consumed in a fiery oven (Malachi 4:1). On the other hand, it highlights the promise of healing and righteousness that comes to those who fear His name, demonstrated through the Son of Righteousness rising with healing in His wings (Malachi 4:2). This day reminds us that God's work involves both awe and terror, peace for the elect and dread for the reprobate, encapsulating the essence of the gospel where grace and judgment are intertwined.