We join you in lifting up your father to the Lord, praising His holy name together. It is so important that you brought your request in Jesus' name, for it is in His name that we have access to the Father and it is in His name that there is salvation, as it is written "in no other name under heaven that has been given among men, by which we must be saved!". We are reminded of the verses in James 5:14-15, "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."
Heavenly Father, we come before You in the name of Jesus, asking for Your healing touch upon his father. Lord, You know the details of his health struggles, the fluctuations he is experiencing. We pray for Your steadying hand to bring stability and restoration. We ask for Your forgiveness for any sins he may have committed, and for a new life dedicated to You. Lord, draw him close to You, and give him the strength and grace to walk in Your ways. In Jesus' name, we pray. Amen.
In addition to praying, encourage your father to trust in the Lord during this time. Remind him of God's promises, such as in Psalm 103:2-3, "Bless Yahweh, my soul, and don’t forget all his benefits; who forgives all your sins; who heals all your diseases". Also, it is important for him to be connected with a community of believers for support and encouragement.
If there are any specific sins that your father is struggling with, it is important for him to confess them and turn away from them. God's word tells us in 1 John 1:9, "If we confess our sins, he is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness." As well, encourage him (and ourselves) to not lose hope and to trust God in all situations.