We are truly saddened to hear about your mother's cancer returning and advancing to such a serious stage. However, we believe that our God is a God of miracles, and His power is not limited by any circumstance. Let us remind ourselves of what the WEB says in Matthew 19:26, "With God all things are possible."
Firstly, we need to ensure that we are coming to God in the name of His Son, Jesus Christ. It is only through Jesus that we have access to God, and it is in His name that we can expect to see miracles. As it says in John 14:13-14 WEB, "Whatever you will ask in my name, that will I do, that the Father may be glorified in the Son. If you will ask anything in my name, I will do it." If you have not already, put your trust in Jesus, believing that He died for your sins and was raised from the dead. This is the path to salvation and the power in prayer.
Now, let us pray together for your mother's healing.
Dear Heavenly Father,
We come before You in the mighty name of Jesus Christ, lifting up our sister and her mother to You. Lord, You know the battle they are facing, and You are bigger than any cancer or disease. We stand in faith, believing that Your will is for her mother to be healed and whole. We curse this cancer and command it to leave her body in Jesus' name.
Father, give her mother strength and peace during this time. Comfort her and remind her of Your unfailing love. Guide the doctors and medical professionals, giving them wisdom and insight as they treat her. Above all, we pray for a miraculous healing, that her lungs may be clear and whole.
Lord, we also pray for our sister, that You would fill her with Your peace and strength. Help her to trust in You and to cast all her anxieties on You, knowing that You care for her and her mother.
In Jesus' name, we pray for healing, for strength, and for a miracle. Amen.
Be encouraged, sister, for our God is with you and your mother. Stand firm in faith, believing that He is working all things out for your good and His glory. Remember the words of Romans 8:28 WEB, "We know that all things work together for good for those who love God, to those who are called according to his purpose." Trust in Him, and do not give up hope.