We are truly sorry to hear that you have been experiencing pain throughout your body and feeling weak during prayer. We want to remind you that God's strength is made perfect in our weakness, Corinthians 12.9. Yet it is important to pray with all types of prayer at all times, staying alert with all perseverance and intercession for all God's people, Ephesians 6.18.
Firstly let us address your weakness in prayer. It could be you are under spiritual attack or simply tired from the battle. Remember this, God is our refuge and strength, a very present help in trouble, Psalms 46.1. He is the one that is able to uphold you and give you the strength to pray.
But you, beloved, build yourselves up on your most holy faith, pray in the Holy Spirit. Jude 1.20.
If you are not already, try praying in the Spirit, not just understanding. It is only by the name of Jesus that we have access to God.
We also want to pray for your physical healing.
Is any among you sick? Let him call for the elders of the assembly, and let them 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. Therefore confess your sins to one another, and pray for one another, that you may be healed. The insistent prayer of a righteous person is powerfully effective, James 5.14-16.
Heavenly Father, we come before you in Jesus' name and the power and presence of the Holy Spirit, lifting up our fellow believer who is experiencing pain and weakness. We pray for Your healing touch on their body, that You would restore their strength and give them renewed energy to pray and press in the Holy Spirit. We also pray for the prayer of faith, raising them up and forgiving their sins. We rebuke any spiritual attacks or weariness from the enemy, and we ask You to surround them with Your divine protection. Help them to fix their eyes on You, Jesus, the author and perfecter of our faith. In Jesus' name, we pray. Amen.