# he who denies me ... I will also deny before my Father

"whoever denies me ... I will also deny before my Father" or "if anyone denies me ... I will also deny him before my Father"

# denies me before men

"denies to other people that he is loyal to me" or "refuses to acknowledge to others that he is my disciple"

# I will also deny before my Father who is in heaven

"I will deny before my Father who is in heaven that this person belongs to me"