Prayer for the Healing of my Grandfather

I humbly ask your prayers for my grandfather he is suffering from arthritis, and He’s been suffering the pain every time he tried to walk. I feel my heart hurts every time I see him suffering. May the Lord will bless him with strength and healing power. Also, pray for my grandmother, may the Lord will bless her with good health. Pray that the Lord will bless them with a long-life.
Thank you so much and God bless us all.