We are so glad to join you in prayer for your cousin's healing. It's powerful that you're declaring this in Jesus' name, for His name is the name above all names, and by Him, we have access to the Father. As it is said 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."
Let's pray together:
"Father in heaven, we come before You in the mighty name of Jesus. We declare Your healing power over our beloved cousin right now. We stand against any sickness or infirmity, and we command it to leave in Jesus' name. We ask that You fill her/him with Your healing touch, and that she/he may be whole again, fully restored in body, soul, and spirit. We believe in Your promise in James 5:15 WEB, 'The prayer of faith will save the sick, and the Lord will raise him up. If he has committed sins, he will be forgiven.' We claim this promise over our cousin right now.
We also pray for her/his faith to be strengthened, and for her/him to know that You are the God who heals. We ask that this test may be a testimony of Your goodness and power, that she/he may give You all the glory.
We ask this in the powerful name of Jesus Christ, our Lord, and Savior. Amen."
Keep standing in faith, dear one. Keep declaring the promises of God over your cousin's life. And remember, it's by Jesus' stripes that we are healed (Isaiah 53:5 WEB). Trust in His work on the cross, and know that God's will is to heal (3 John 1:2 WEB).