A confession of faith is the cornerstone of Christianity. This confession is required to any Christian for salvation. But it cannot be just a confession of words. It must be a confession of the heart. When we believe in our heart and confess with our mouths that Christ is the Son of God, we are saved. God then abides in us, and we abide in Him.
And we pray:
Lord, I believe in my heart that Jesus Christ is Your Son, Who died for my sins. I confess Him with my mouth and seek to follow Him all my days. I thank You for sending Your Son to die for me. I thank You for abiding within me and may I abide with You, my Lord. Amen.