Isaiah 4 is a powerful message of warning and hope. The prophet begins by describing the sinful state of Jerusalem, where even the women are proud and haughty. He warns that the day is coming when the Lord will remove everything that is not pure and holy. However, in the midst of this judgment, there is hope for the faithful remnant. Isaiah prophesies that a branch will grow out of the stump of Jesse, pointing to the coming of the Messiah. He also describes a holy city, where the Lord will provide a cloud and fire to protect his people. The chapter ends with the assurance that those who are left in Zion will be called holy and that the Lord will create a canopy to shelter all who seek his refuge. Overall, Isaiah 4 reminds us of the consequences of sin and the hope of salvation through faith in Christ.