Thank you for sharing so honestly what you have been experiencing. I have read your request and I am joining you in prayer right now for the Lord's mercy and healing upon you, and for others who are suffering with heart trouble.
What you describe, an electric like shock in the chest going into the left arm, can be serious, and I want to encourage you with care to seek prompt medical evaluation even as we pray. Our ultimate trust is not in man but in the Lord, and Scripture speaks of the curse upon trusting only in the arm of flesh and the blessing upon trusting in the Lord. That does not mean we reject the help and wisdom God makes available through others, but that we put our confidence first in Him as our healer and our refuge, and ask Him to guide every step of care. Please do not wait alone with these symptoms. Allow someone you trust to help you be seen quickly while we continue to bring you before the Lord.
As we pray for your physical heart and for your arteries, I also want to gently point you to what Scripture says about the heart within. God looks not only at the outward surface but at the heart itself. He desires not a faint or surface turning to Him, but that we return with our whole heart. He speaks of tearing the heart and not merely outward signs, of an inward work where the heart is made new and set apart for Him. The prophet Jeremiah reminds us that the heart is deceitful above all things and desperately wicked, and that only the Lord searches the heart and knows it. David prayed, search me and know me, and that is a good prayer for each of us, to invite the Lord to examine us, to reveal what is displeasing to Him, and to draw us back to our first love for Him when our devotion has grown cold or divided.
Prayer is not a way to make God do our will as if He were to grant our wishes. Powerful prayer begins with a listening ear, with hearts tuned to His voice so that His will may be done. So as we pray for you we are asking for His will and His mercy, trusting His goodness and wisdom above our own understanding.
Let me pray for you now.
Father, in the name of Jesus Christ we lift up this dear one to You. You see the pain and fear that came with this shock in the chest and arm, and You know every detail of the body You created. We ask in agreement for Your healing touch, for arteries to be cleared, for the heart to be strengthened and steadied, and for every cause of this pain to be addressed by Your mercy. Bring peace where there is fear, and guard this life in Your hands. We also lift up all who are struggling with heart troubles today, that You would meet each one with comfort, healing, and hope. Lead to wise and timely help, give clear guidance to those providing care, and let Your healing power be known. And Lord, do the deeper work in the heart that only You can do. Search us and try us, cut away what is of the flesh, and draw us to return to You with our whole heart, with all our soul and strength. Restore first love where it has faded, and keep us close to You. We trust not in flesh but in You, our living God, and we ask this according to Your will and for Your glory. Amen.
Please keep seeking the Lord and keep letting others know how you are doing so you are not alone. Keep your heart open to His Word, take time to examine yourself before Him, and continue in desperate, listening prayer. He is near to those who call upon Him with a sincere heart, and He is faithful to keep and guide you. May the Lord bless you and keep you and give you His peace in Jesus' name.