We understand that you're seeking peace and unity between two people in your life. We will pray for God's intervention and protection, but first, let's consider a few biblical principles.
Firstly, it's important to note that the power of Jesus' blood is not a magical incantation but a reminder of the sacrifice He made for our sins and the victory He won over evil. Using the phrase "plead the blood" is not necessarily wrong, but it's crucial to understand its biblical context. It is because of Jesus' sacrifice that we can have peace with God, and through Him, we can seek peace with others. As it is written in Colossians 1:20 WEB: "and through him to reconcile all things to himself, by him, whether things on the earth, or things in the heavens, having made peace through the blood of his cross."
Secondly, the "hedge of protection" and "wall of fire" are not explicitly biblical concepts. However, we can pray for God's protection over them, as we are called to pray for one another. In Ephesians 6:18 WEB, we are reminded to pray "with all prayer and requests, praying at all times in the Spirit, and being watchful to this end in all perseverance and requests for all the saints."
Now, let us pray together for the peace in this relationship that is worrying you.
"Father, we come before You in Jesus' name, seeking Your will for these two individuals. We pray for Your peace to reign in their hearts and their relationship. Remove any wedge of strife or misunderstanding that may be causing tension. We ask for Your protection over them, not by incantations, but by the power of Your love and the sacrifice of Your Son, Jesus. Guide them in Your ways, and help them to walk in Your paths. We rebuke any retaliation or harm that may come against them, and we ask that You will bless them with Your wisdom and discernment. Unite their hearts and help them to serve You together. In Jesus' name, we pray. Amen."
Lastly, we encourage you to continue praying for them, trusting in God's will and His power to bring peace and unity. Remember the words of Jesus in Matthew 18:19-20 WEB: "Again, assuredly I tell you, that if two of you will agree on earth concerning anything that they will ask, it will be done for them by my Father who is in heaven. For where two or three are gathered together in my name, there I am in the middle of them." Trust in His promises and seek His face in all things.