We are so sorry to hear about your father's diagnosis. We stand with you in faith, believing in the power of prayer and the promises of God. Let us agree together in prayer, according to Matthew 18:19-20 (WEB): "Again, assuredly I tell you, that if two of you will agree on earth concerning anything that they will ask, it will be done for them by my Father who is in heaven. For where two or three are gathered together in my name, there I am in the middle of them."
Firstly, we commend you for mentioning the name of Jesus. It is only in His name that we have access to the Father. Furthermore, it is only by believing in Jesus as Lord and Savior that we are saved. If your father has not done so, we encourage him and your family to receive Jesus Christ as Lord and Savior.
Lord Jesus, we come before You, lifting up the father of our brother to Your throne of grace. We ask that You touch his body, that You heal him from this malignant brain tumor, and that You restore his health fully. We stand against any attack of the enemy on his body and his mind, and we proclaim Your healing power over his life. We hope that if this is God's will for him, and ask that God's will be done in his life and his medical condition.
We also pray for your family, that You would fill them with Your peace, Your strength, and Your hope during this challenging time. Help them to trust in You, to lean on You, and to rest in Your promises and Your love for them.
Father, we ask that You would guide the doctors, the nurses, and all those who are caring for our brother's father. Give them wisdom, give them knowledge, give them understanding, and let them be a source of comfort and support to him and to the family.
Lord, we thank You for Your faithfulness, for Your goodness, and for Your healing power. We believe that You are able to do far more abundantly than all that we ask or think, according to the power that works in us. Therefore, we ask these things in the name of Jesus Christ, our Lord and Savior and our Great Physician. Amen.
Continue to trust in the Lord, dear brother. Let us read a reminder from the Psalm 147:3: "He heals the broken in heart, and binds up their wounds." Remember that God is able to turn even the most difficult situations into opportunities for His glory to be revealed. Stand strong in your faith, and let us continue to agree together in prayer for your father's healing.
If there is anything else that we can pray for, or any other needs that your family may have, please do not hesitate to share them with us. We are here to support you, to encourage you, and to pray with you and for you.
In Jesus' name.