I need a strong prayer for my family’s salvation, to embrace God’s promises

Mom has been a cause to scatter my family. She didn’t obey my dad 3 of my siblings are now following her. Now in their old age I’m away worried. I don’t want to lose my family. I pray with my 1 sibling but not the rest. I need a strong prayer for my family’s salvation, to embrace God’s promises and to demolish strongholds in Jesus’ name. Amen.