Daniel 2:40

And the fourth kingdom is strong as iron, because that iron is breaking small, and making feeble, all things, even as iron that is breaking all these, it beateth small and breaketh.

Daniel 7:7

After this I was seeing in the visions of the night, and lo, a fourth beast, terrible and fearful, and exceedingly strong; and it hath iron teeth very great, it hath consumed, yea, it doth break small, and the remnant with its feet it hath trampled; and it is diverse from all the beasts that are before it; and it hath ten horns.

Jeremiah 15:12

Doth one break iron -- northern iron, and brass?

Daniel 2:33

its legs of iron, its feet, part of them of iron, and part of them of clay.

Daniel 7:19-26

'Then I wished for certainty concerning the fourth beast, that was diverse from them all, fearful exceedingly; its teeth of iron, and its nails of brass, it hath devoured, it doth break small, and the remnant with its feet it hath trampled;

Daniel 8:24

and his power hath been mighty, and not by his own power; and wonderful things he destroyeth, and he hath prospered, and wrought, and destroyed mighty ones, and the people of the Holy Ones.

Daniel 9:26

And after the sixty and two weeks, cut off is Messiah, and the city and the holy place are not his, the Leader who hath come doth destroy the people; and its end is with a flood, and till the end is war, determined are desolations.

Daniel 11:36-45

'And the king hath done according to his will, and exalteth himself, and magnifieth himself against every god, and against the God of gods he speaketh wonderful things, and hath prospered till the indignation hath been completed, for that which is determined hath been done.

Amos 1:3

And thus said Jehovah: For three transgressions of Damascus, And for four, I do not reverse it, Because of their threshing Gilead with sharp-pointed irons,

John 11:48

if we may let him alone thus, all will believe in him; and the Romans will come, and will take away both our place and nation.'

Treasury of Scripture Knowledge

Summary

And the fourth kingdom shall be strong as iron: forasmuch as iron breaketh in pieces and subdueth all things: and as iron that breaketh all these, shall it break in pieces and bruise.

General references

Bible References

The fourth

Daniel 2:33
its legs of iron, its feet, part of them of iron, and part of them of clay.
Daniel 7:19
'Then I wished for certainty concerning the fourth beast, that was diverse from them all, fearful exceedingly; its teeth of iron, and its nails of brass, it hath devoured, it doth break small, and the remnant with its feet it hath trampled;
Daniel 8:24
and his power hath been mighty, and not by his own power; and wonderful things he destroyeth, and he hath prospered, and wrought, and destroyed mighty ones, and the people of the Holy Ones.
Daniel 9:26
And after the sixty and two weeks, cut off is Messiah, and the city and the holy place are not his, the Leader who hath come doth destroy the people; and its end is with a flood, and till the end is war, determined are desolations.
Daniel 11:36
'And the king hath done according to his will, and exalteth himself, and magnifieth himself against every god, and against the God of gods he speaketh wonderful things, and hath prospered till the indignation hath been completed, for that which is determined hath been done.
John 11:48
if we may let him alone thus, all will believe in him; and the Romans will come, and will take away both our place and nation.'

Forasmuch

Daniel 7:7
After this I was seeing in the visions of the night, and lo, a fourth beast, terrible and fearful, and exceedingly strong; and it hath iron teeth very great, it hath consumed, yea, it doth break small, and the remnant with its feet it hath trampled; and it is diverse from all the beasts that are before it; and it hath ten horns.
Jeremiah 15:12
Doth one break iron -- northern iron, and brass?
Amos 1:3
And thus said Jehovah: For three transgressions of Damascus, And for four, I do not reverse it, Because of their threshing Gilead with sharp-pointed irons,

General references

Daniel 2:33
its legs of iron, its feet, part of them of iron, and part of them of clay.