There is nothing new under the sun (Ecclesiastes 1:9) and
to everything there is a season (Ecclesiastes 3:1) —
As Christians, Children of God, the Body of Christ, and the Bride, we are, each of us as sinners, covered by the atoning blood of Jesus Christ. The fight may be the same, but the methods of engagement have changed.
We fight with the truth and power of the Word of God, with the Gospel of Jesus Christ, and with the works of the Holy Spirit.
We lay our lives at the foot of Christ and whether we live, we live unto the Lord, and whether we die, we die unto the Lord (Romans 14:8).
Under His wings, we find refuge; His faithfulness is our shield and armor (Psalm 91:4).