Tell your grandfather to read Psalm 51 which is the Prayer for Forgiveness:
Psalm 91:God Our Protector
Precious Blood of Christ Prayer which you and your Grandfather can say:
PRAYER TO THE PRECIOUS BLOOD
LORD Jesus by faith in Your merits,
I now take Your Precious Blood
and sprinkle it over myself and my family
right from the crown of my head to the very soles of my feet.
I claim total and complete protection for my life and my family.
Lord Jesus, keep me free today from evil, sin, temptation,
Satan’s attacks and afflictions,
fear of darkness, fear of man,
sickness, diseases, doubts, anger, all calamities
and from all that is not of Your Kingdom.
Fill me Lord Jesus with the gifts of Your Holy Spirit
and grant me the gifts of wisdom, knowledge, faith, understanding and discernment, so that I will live today in Your Glory by doing what is right.
I praise You Jesus, I thank You Jesus,
I love You Jesus, I adore You Jesus.
To all those faithful who shall recite for 3 years,
each day 2 Paters, Glorias and Aves,
in honor of the drops of blood I lost,
I will concede the following 5 graces:
lst. The plenary indulgence and remittance of your sins.
2nd. You will be free from the pains of Purgatory.
3rd. If you should die before completing the said 3 years, for
you if will be the same as if you had completed them.
4th. It will be upon your death the same as if you had
shed all your blood for the Holy Faith.
5th I will descend from Heaven to take your soul and that of your
relatives until the fourth generation.
Binding Evil Spirits
In the name of the Lord Jesus Christ of Nazareth, I stand with the power of the Lord God Almighty to bind Satan and all his evil spirits, demonic forces, satanic powers, principalities, along with all kings and princes of terrors, from the air, water, fire, ground, netherworld, and the evil forces of nature.
I take authority over all demonic assignments and functions of destruction sent against me, and I expose all demonic forces as weakened, defeated enemies of Jesus Christ. I stand with the power of the Lord God Almighty to bind all enemies of Christ present together, all demonic entities under their one and highest authority, and I command these spirits into the abyss to never again return. Their assignments and influences are over.
I arise today with the power of the Lord God Almighty to call forth the heavenly host, the holy angels of God, to surround and protect, and cleanse with God’s holy light all areas vacated by the forces of evil. I ask the Holy Spirit to permeate my mind, heart, body, soul and spirit, creating a hunger and thirst for God’s holy Word, and to fill me with the life and love of my Lord, Jesus Christ.