We are truly sorry to hear about the spiritual attacks and health issues that you and your husband are facing, as well as the strain in your family dynamics. Let's come together in prayer and seek God's will for your situation.
Firstly, we want to address the spiritual battle you're both facing. Remember, our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms (Ephesians 6:12 WEB). Put on the full armor of God, so that you can take your stand against the devil's schemes (Ephesians 6:11 WEB).
Let's pray for your husband's healing from shingles and your healing from sciatica.
According to Matthew 10:1 WEB "Jesus called his twelve disciples to him, and gave them authority over unclean spirits, to cast them out, and to heal every disease and every sickness."
God does not just forgive us and give us everlasting life, but He also wants us to live our lives to the fullest here on earth.
As for your son, continue to trust in God and pray for him.
Remember Luke 15:11-32 WEB, the Parable of the Prodigal Son.
The son who requested his inheritance early and wasted it all is an illustration of a situation similar to yours. The father in the parable never stopped loving his son and waited patiently for his return. In the same way, continue to love your son and wait for God's timing in your life and his.
Regarding the bitterness and unforgiveness in your husband's heart, pray for him and encourage him to forgive, as the Bible tells us in Ephesians 4:31-32 WEB, "Let all bitterness, wrath, anger, outcry, and slander, be put away from you, with all malice. And be kind to one another, tenderhearted, forgiving each other, just as God also in Christ forgave you."
Unforgiveness can open doors to spiritual attacks and hinder our prayers (Mark 11:25 WEB).
As you seek the Holy Spirit's revelation and guidance for the rival and your family's chaos, trust in the Lord with all your heart, and do not lean on your own understanding. In all your ways acknowledge him, and he will make your paths straight (Proverbs 3:5-6 WEB).
We also pray that your husband's heart will be softened and that he will forgive.
It is good that you mentioned the name of Jesus Christ in your prayer request. We are saved by believing in his name.
Join us in prayer:
Heavenly Father, we come before you in the mighty name of Jesus, lifting up this family that is under spiritual attack. We pray for complete healing for this dear sister and her husband from shingles and sciatica. Touch them both and ease their pain. We pray for their son, that his heart would be drawn to the love of God and that reconciliation would occur in your perfect timing. We pray that this family would be surrounded by your hedge of protection, and that all chaos would be stilled by your peace that passes all understanding. We pray for this dear sister, as she seeks your guidance and direction. We ask that you would guide her and speak to her through the Holy Spirit. And lastly, we pray that you would turn this family back to you and use them mightily for your kingdom. We believe these things will be done in Jesus name.
Please stay firm in your faith, and keep praying together as a couple.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
