One of the great offensive prayers that we can pray is to "plead the Blood of Jesus" over people and situations. To enter a plea is a legal term, and God is a legal God. When we enter a plea of the Blood of Jesus in Jesus' name, we are calling on the highest power in the universe in our hehalf.
THE PASSOVER in the Old Testament Scriptures is the focal point of understanding the power of the blood. All sacrifice that proceeds after that in the Mosaic system is founded on this principle: through the blood of sacrifice, there is deliverance, protection, and a God-provided future. This mighty forecasting picture was fulfilled in the Person of Jesus. I recently heard a fine teaching by Dr. Jack Hayford (who wrote the classic chorus "Majesty") that explained pleading the blood very well. I include some of his thoughts here.
Jesus had not even begun his ministry when, appearing before the waters of baptism, John the Baptist announced of Him: “Behold, the Lamb of God who takes away the sin of the world” (John 1:29). Everyone present understood the implication of his words, but it was difficult for them to come to terms with the idea that the Messiah, who is the King, is also the sacrifice, who is the Lamb. John was raising a signal not only to that day but also to all history.
When we deal with the subject of the blood, we are not dealing with some gory residue of ancient human superstition. When we talk about the blood of Christ, we are dealing with that which the Scriptures refer to as precious for its transcendent value to address human sin, need, failure, and bondage. Its value is related to the inestimable price of human liberty from the bondage of spiritual torment. The blood of Jesus is the central economic factor in all human order. Jack Hayford writes: So central is it that the Bible says Christ’s blood will the theme of our praise forever."
Here you will find inspiration and encouragement for your prayer life. Prayer is the great gift of God to us. Make use of it often. It is supernatural lightning in the Book. It is the Holy Spirit partnering with you. It is how you touch the face of God.