Eternal One: Pay attention! I am sending My messenger,
        and he will clear the road ahead for Me.[a]
    The Lord you seek will suddenly arrive at His temple.
        And the Messenger of God’s covenant, your soul’s delight,
    Watch, because He, too, is coming.

God declares His Anointed One will come, and the way will be prepared. Notice has been given: be ready.

2 Can anyone live through the day when He arrives?
    Will anyone be left standing when He appears?
He is a purifying fire;
    He is like lye soap.
3 Like a refiner of silver,
    He will purify the descendants of Levi—
Until they are pure, unalloyed gold and silver.
    Then they will draw near to the Eternal One,
Presenting offerings with righteous, clean hands.

Eternal One: 5 Then I will approach you for judgment, and I will be a swift witness against the constant sorcerers; thechronic adulterers; the habitual liars; those who continue cheating wages from their hired laborer, a widow, or an orphan; and those who always reject the immigrant, not fearing Me, the Eternal, Commander of heavenly armies.6 Because I am the Eternal One, I never change; as a result, you children of Jacob have not been destroyed though your blessing may have been delayed.