In this quick read, Grace Roos explores the scriptural importance of the Blood and how to apply it in daily life. She powerfully sums it up this way. The blood of Jesus:

Purges me of every defilement of the enemy.
Keeps and guards my mind day and night
Prevents deception and aborts every attempt of the enemy to deceive me.
Is my diving covering and protection against all the fiery darts of the enemy.