Denial is a two way street:
“For whoever is ashamed of Me and My words, the Son of Man will be ashamed of him when He comes in His glory, and the glory of the Father and of the holy angels.” – Lord Jesus Christ (Luke 9:26)
“But whoever denies Me before men, I will also deny him before My Father who is in heaven.” – Lord Jesus Christ (Matthew 10:33)
“Therefore everyone who confesses Me before men, I will also confess him before My Father who is in heaven.” – Lord Jesus Christ (Matthew 10:32)
It’s as simple as that (the power of words).