Slightly branching off topic here but still related because it has to do with 70 A.D.
The phrase “on the clouds†is used in the Bible to denote a position of authority and power. Many, many times God used the imagery of being in clouds when He indicated He would come in judgment against a people.
Matthew 16:27-28
For the Son of man shall come in the glory of his Father with his angels; and then he shall reward every man according to his works. Verily I say unto you, There be some standing here, which shall not taste of death, till they see the Son of man coming in his kingdom.
Matthew 24:30
They will see the Son of Man coming on the clouds of the sky, with power and great glory.
Matthew 26:63-64
But Jesus held his peace. And the high priest answered and said unto him, I adjure thee by the living God, that thou tell us whether thou be the Christ, the Son of God. Jesus saith unto him, Thou hast said: nevertheless I say unto you, Hereafter shall ye see the Son of man sitting on the right hand of power, and coming in the clouds of heaven .
David described the time he cried to God when in trouble from his persecutors.
2 Samuel 22:7-14
In my distress I called upon the LORD, and cried to my God: and he did hear my voice out of his temple, and my cry did enter into his ears. Then the earth shook and trembled; the foundations of heaven moved and shook, because he was wroth. There went up a smoke out of his nostrils, and fire out of his mouth devoured: coals were kindled by it. He bowed the heavens also, and came down; and darkness was under his feet. And he rode upon a cherub, and did fly: and he was seen upon the wings of the wind. And he made darkness pavilions round about him, dark waters, and thick clouds of the skies. Through the brightness before him were coals of fire kindled. The LORD thundered from heaven, and the most High uttered his voice.
God came in judgment against his enemies! David said God came with darkness beneath His feet and thick clouds of the skies were like pavilions or tabernacles around Him. And He rode upon a cherub.
Did David physically see these things? Of course not! But david was inspired of God to describe God's judgment on his persecutors as a coming in clouds. This was a well-known picture of God in the minds of Old Testament adherents.
In fact, the high priest knew very well that Jesus was saying he was God when He informed the priest that the man would see Christ come in clouds! He knew Jesus was telling him that Christ was correct and was the Son of God, and would come in judgment to destroy Jerusalem in his day!
Jesus did not use speech that the High Priest was unfamiliar with! He did not speak of a truth exclusively understood by the church to be a time of resurrection 2000 years later. He spoke very familiar words to the High Priest, and the High Priest knew exactly what Jesus was insinuating. And for that reason, the Priest cried, "Blasphemy!"
Matthew 26:64-65
Jesus saith unto him, Thou hast said: nevertheless I say unto you, Hereafter shall ye see the Son of man sitting on the right hand of power, and coming in the clouds of heaven. Then the high priest rent his clothes, saying, He hath spoken blasphemy; what further need have we of witnesses? behold, now ye have heard his blasphemy.
The High Priest recalled these very scriptures I am citing in support of the understanding that coming in clouds referred to God coming in judgment. Jesus was saying He was the God of the Old Testament who came in judgment! Jesus not only informed the man that He was God, but also that Jerusalem would be judged just as she was judged in Old Testament times, and that using heathen armies.
Other examples of clouds being used to depict power, authority and judgment.
Psalm 97:2
Clouds and darkness are round about him: righteousness and judgment are the habitation of his throne.
Jeremiah 4:13-14
Behold, he shall come up as clouds, and his chariots shall be as a whirlwind: his horses are swifter than eagles. Woe unto us! for we are spoiled. O Jerusalem, wash thine heart from wickedness , that thou mayest be saved. How long shall thy vain thoughts lodge within thee?
Nahum 1:3
The LORD is slow to anger, and great in power, and will not at all acquit the wicked: the LORD hath his way in the whirlwind and in the storm, and the clouds are the dust of his feet.
Zephaniah 1:15-17
That day is a day of wrath, a day of trouble and distress, a day of wasteness and desolation, a day of darkness and gloominess, a day of clouds and thick darkness, A day of the trumpet and alarm against the fenced cities, and against the high towers. And I will bring distress upon men, that they shall walk like blind men, because they have sinned against the LORD: and their blood shall be poured out as dust, and their flesh as the dung.
Revelation 10:1
Then I saw another mighty angel coming down from heaven. He was robed in a cloud, with a rainbow above his head; his face was like the sun, and his legs were like fiery pillars.