Job 40:18

Its bones [are] tubes of copper, its limbs like rods of iron.

Job 7:12

Am I [the] sea, or a sea monster, that you set a guard over me?

Isaiah 48:4

because {I know} that you [are] obstinate, and your neck an iron sinew, and your forehead bronze.

Treasury of Scripture Knowledge

Summary

His bones are as strong pieces of brass; his bones are like bars of iron.

General references

Bible References

General references

Job 7:12
Am I [the] sea, or a sea monster, that you set a guard over me?
Isaiah 48:4
because {I know} that you [are] obstinate, and your neck an iron sinew, and your forehead bronze.