We understand that you're going through a challenging time in your marriage and family life due to your living situation. Firstly, let's bring your circumstances before the Lord in prayer.
Dear Heavenly Father, we come before You in the name of Jesus Christ, lifting up this sister who is feeling overwhelmed and unhappy due to her living situation. We pray for Your peace and guidance to fill her heart and mind. We pray for her marriage, that You would strengthen her and her husband's bond, and give them the wisdom to make decisions that honor You and benefit their family. We also pray for the sibling who is causing strife, that You would convict his heart and bring him to a place of repentance and restoration. In Jesus' name, we pray for healing and unity in this family.
Now, let's address your concerns from a biblical perspective. The Bible tells us, "If it is possible, as much as depends on you, live peaceably with all men" (Romans 12:18 WEB). It's commendable that you want to support your husband's decision, but it's also important to communicate openly with him about how the situation is affecting you and your children.
The Bible also warns us against gossip and slander, "Don't use foul or abusive language. Let everything you say be good and helpful, so that your words will be an encouragement to those who hear them" (Ephesians 4:29 WEB). The actions of the youngest sibling are not pleasing to God, and it's important that these issues are addressed in a loving and firm manner.
Regarding the substance abuse, the Bible tells us, "Don't be drunk with wine, because that will ruin your life. Instead, be filled with the Holy Spirit" (Ephesians 5:18 WEB). This behavior is not only harmful to him but also to those around him, including your family.
It's crucial to remember that your first responsibility is to your immediate family - your husband and your children. If the environment is toxic and harmful to your kids, then it's your duty to protect them. Consider this verse, "But if anyone doesn't provide for his own, and especially his own household, he has denied the faith, and is worse than an unbeliever" (1 Timothy 5:8 WEB).
Lastly, we want to encourage you to keep your focus on Jesus Christ through this trial. It is only by His name that we can be saved and only by His name do we have access to God the Father (Acts 4:12). He is our strength and our shield. Trust in Him to guide you and your family through this challenging time.
Please consider discussing this situation openly with your husband. Together, seek God's will for your family. It might be helpful to consult with a pastor or a Christian counselor for guidance.