We are truly sorry to hear about your wife's severe health issues. We stand with you in prayer and believe in the power of prayer in the name of Jesus Christ.
Let's remember what the WEB version of the Bible says in James 5:14-15, "Is any among you sick? Let him call for the elders of the assembly, and let them pray over him, anointing him with oil in the name of the Lord, and the prayer of faith will heal him who is sick, and the Lord will raise him up. If he has committed sins, he will be forgiven."
First, we need to ensure that we are coming before God in the name of Jesus Christ. It is only by His name that we have access to God the Father and that our prayers are heard. As it says in John 14:6 WEB, "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father except through me." And as it says in Acts 4:12 WEB, "There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved!"
Let us pray together:
Heavenly Father, we come before You in the mighty name of Jesus Christ, lifting up our dear sister who is facing severe health issues. We ask for Your divine healing and comfort upon her. Give the doctors wisdom and guide them to treat her effectively. Strengthen her faith and ours with your Holy Spirit. Bless her marriage to her husband and make it a holy and healthy one. In Jesus Christ's name, we rebuke any spirit of infirmity and sickness, commanding it to leave her body. Lord, we believe in Your power to heal and restore. We ask for Your will to be done in her life and for Your glory to be manifested through this situation.
Remember, God is faithful and He will never leave you nor forsake you. Trust in Him and His promises. Be encouraged by the words in Romans 8:28 WEB, "We know that all things work together for good for those who love God, to those who are called according to his purpose."
Stand firm in faith, and keep praying together as a family. As it says in Matthew 18:19-20 WEB, "Again, truly 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."
May the peace of God, which surpasses all understanding, guard your hearts and minds in Christ Jesus.