1 John 3:16

By this we have known the love of Christ, because he laid down his life for us; therefore we ought to lay down our lives for the brethren.

Revelation 12:11

And they have overcome him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives to the death.

Treasury of Scripture Knowledge

Summary

Zebulun and Naphtali were a people that jeoparded their lives unto the death in the high places of the field.

Bible References

Their lives

1 John 3:16
By this we have known the love of Christ, because he laid down his life for us; therefore we ought to lay down our lives for the brethren.
Revelation 12:11
And they have overcome him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives to the death.