We are truly sorry to hear about your father's health condition. Let us first affirm the power of prayer and the healing that comes from God alone. We are reminded in James 5:14-15 (WEB), "Is any among you sick? He should call for the elders of the assembly, and they should pray over him, anointing him with oil in the name of the Lord, and the prayer of faith will heal him who is sick, and the Lord will raise him up. If he has committed sins, he will be forgiven."
Let us pray together:
"Father in heaven, we come before You in the name of Jesus Christ, seeking Your healing and comfort for our dear father who is not eating and experiencing vomit tendency. Lord, You are the Great Physician, and we believe that You have the power to heal and restore. We ask for divine health and healing of his body. We pray for a cure from his condition according to Psalm 107:20 (WEB) 'He sent his word, and healed them, and delivered them from their destructions.'
We also pray for strength and comfort for him and our family during this time. We trust in Your goodness and mercy, knowing that all things work together for good to those who love You and are called according to Your purpose. We ask this in the mighty name of Jesus Christ, our Lord and Savior. Amen."
We encourage you to continue praying and trusting in the Lord, knowing that His love and care for you and your father are unfailing. Remember the words of Jesus in John 14:13-14 (WEB), "Whatever you ask in My name, I will do it, that the Father may be glorified in the Son. If you ask anything in My name, I will do it." Ensure you are asking in Jesus' name and believe that God will answer according to His will for your father.
Lastly, we urge you to examine your life and your father's life for any unconfessed sin and unbelief. Lay it before the Lord and ask for His forgiveness and mercy, entrusting all to the Lord Jesus. Continue to praise God and worship Him in all circumstances, for He is good and His mercy endures forever.