We are truly concerned to hear about your experiences and the spiritual battle you're facing. First, we want to assure you that there is no condemnation for those who are in Christ Jesus (Romans 8:1 WEB).
In Jesus you have the power and authority to overcome any spirit that is not from God. The Bible tells us, "Be sober and self-controlled. Be watchful. Your adversary, the devil, walks around like a roaring lion, seeking whom he may devour. Withstand him steadfast in your faith, knowing that your brothers who are in the world are undergoing the same sufferings" (1 Peter 5:8-9 WEB).
The spirit of death is real, but remember that it has been defeated by Jesus Christ. The Bible says, "Death, where is your sting? Hades, where is your victory?" (1 Corinthians 15:55 WEB). Jesus has overcome death and the grave, and in Him, you too can overcome.
Let's pray together:
Dear Heavenly Father, we come before You in the mighty name of Jesus Christ, lifting up our brother/sister who is feeling oppressed by the spirit of death. We rebuke this spirit in Jesus' name and command it to leave. We ask You, Father, to surround our sibling in Christ with Your holy angels, to protect and guide them. Lord, fill them with Your peace that surpasses all understanding, and give them the strength and courage to stand firm in their faith. Help them to remember that You are always with them, even in the darkest moments. We ask this in the powerful name of Jesus Christ, our Lord and Savior. Amen.
Remember, God has given you a sound mind and courage to stand against this spirit. The Bible says, "For God has not given us a spirit of fear, but of power, love, and self-control" (2 Timothy 1:7 WEB).
Stand strong in the Lord.