Matthew 27:45

And from the sixth hour there came darkness over all the land until the ninth hour.

Mark 15:33

And, the sixth hour having come, there was darkness upon the whole land until the ninth hour.

Luke 23:44

And it was already about the sixth hour, and darkness came over the whole land till the ninth hour,

Ephesians 1:9

making known to us the mystery of His will, according to His good pleasure which He purposed in Him,

Ephesians 1:11

in Whom we also were made a heritage, having been predestinated according to the purpose of Him Who worketh all things after the counsel of His own will;

Hebrews 7:21

(for they, indeed, have been made priests without an oath; but He with an oath through Him Who said to Him, "The Lord swore, and will not repent, Thou art a Priest forever");

Revelation 6:12

And I saw, when He opened the sixth seal, and a great earthquake took place; and the sun became black as sack-cloth of hair, and the whole moon became as blood;

Treasury of Scripture Knowledge

Summary

For this shall the earth mourn, and the heavens above be black: because I have spoken it, I have purposed it, and will not repent, neither will I turn back from it.

General references

Bible References

The heavens

Matthew 27:45
And from the sixth hour there came darkness over all the land until the ninth hour.
Mark 15:33
And, the sixth hour having come, there was darkness upon the whole land until the ninth hour.
Luke 23:44
And it was already about the sixth hour, and darkness came over the whole land till the ninth hour,
Revelation 6:12
And I saw, when He opened the sixth seal, and a great earthquake took place; and the sun became black as sack-cloth of hair, and the whole moon became as blood;

Because

Ephesians 1:9
making known to us the mystery of His will, according to His good pleasure which He purposed in Him,
Hebrews 7:21
(for they, indeed, have been made priests without an oath; but He with an oath through Him Who said to Him, "The Lord swore, and will not repent, Thou art a Priest forever");

General references

Mark 13:24
"But in those days, after that tribulation, the sun will be darkened, and the moon will not give her light,