Colossians 1:18-19 New King James Version (NKJV)
18 And He is the head of the body, the church, who is the beginning, the firstborn from the dead, that in all things He may have the preeminence.
19 For it pleased the Father that in Him all the fullness should dwell

Malachi 3:1-4 New King James Version (NKJV)
The Coming Messenger
1 “Behold, I send My messenger,
And he will prepare the way before Me.
And the Lord, whom you seek,
Will suddenly come to His temple,
Even the Messenger of the covenant,
In whom you delight.
Behold, He is coming,”
Says the Lord of hosts.
2 “But who can endure the day of His coming?
And who can stand when He appears?
For He is like a refiner’s fire
And like launderers’ soap.
3 He will sit as a refiner and a purifier of silver;
He will purify the sons of Levi,
And [a]purge them as gold and silver,
That they may offer to the Lord
An offering in righteousness.

Malachi 4:1 New King James Version (NKJV)
The Great Day of God
1 “For behold, the day is coming,
Burning like an oven,
And all the proud, yes, all who do wickedly will be stubble.
And the day which is coming shall burn them up…