'Warfare' in the Bible

Is there not a warfare to man on earth? And as the days of an hireling his days?

Thou renewest Thy witnesses against me, And dost multiply Thine anger with me, Changes and warfare are with me.

If a man dieth -- doth he revive? All days of my warfare I wait, till my change come.

which I hold in reserve for times of trouble,for the day of warfare and battle?