Have you never said that you believe in Jesus, the Son of the Most High God? If not, you can simply say:
Lord Jesus, thank you for loving me and dying for me on the Cross. Thank you that Your blood washes me from every sin. You are my Lord and Savior now and forever. I believe You rose again and because of Your finished work I am now a child of the Most High God, full of benefits, favor, loved and eternal life. Thank you for filling my heart with Your peace and joy.
Simple. Now go tell someone you love.