We understand that you're going through a challenging time due to a family member's behavior, and it's causing you significant stress. First, let's bring this situation to God in prayer.
"Father, we come before You in Jesus' name, lifting up our fellow believer who is dealing with a stressful family situation. We pray for Your peace that surpasses all understanding to guard their heart and mind in Christ Jesus. We ask for Your wisdom and guidance to handle this situation in a way that honors You. We rebuke any spirit of strife, confusion, or anxiety, asking for Your clarity and divine intervention in Jesus Christ's name."
We encourage you to lean on God's promises during this time. Isaiah 41:10 in the WEB reminds us: "Don't be afraid, for I am with you. Don't be dismayed, for I am your God. I will strengthen you. Yes, I will help you. Yes, I will uphold you with the right hand of my righteousness."
In dealing with this family member, remember what the WEB says in Romans 12:18: "If it is possible, as much as it is up to you, be at peace with all men." It's important to do what you can to maintain peace, but also recognize that you cannot control another person's actions.
If the behavior involves sinful actions, we should rebuke this. Ephesians 5:11 in the WEB says, "Have no fellowship with the unfruitful works of darkness, but rather even reprove them." This should be done in love and with the goal of restoration.
Lastly, we want to emphasize the importance of praying in Jesus' name. It's only through Him that we have access to God. 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." If you haven't already, make sure to place your trust in Jesus Christ for your salvation and praying in Jesus' name.
Keep your eyes on Jesus, and remember that God is faithful to guide you through this challenging time in Jesus' name.