We are saved by grace and grace alone.     |   home
The Armor of God   |   The belt of truth   |   Your feet fitted   |   The shield of faith   |   The helmet of salvation   |   The Sword of the Spirit
The shield of faith
A Roman shield was covered in leather which was immersed in water before battle, so the soldier could put out firy arrows with it.

Water is a type of the Holy Spirit here.