Matthew 10:32,33 (KJV)
32 Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven.
33 But whosoever shall deny me before men, him will I also deny before my Father which is in heaven.
Luke 12:8,9 (KJV)
8 Also I say unto you, Whosoever shall confess me before men, him shall the Son of man also confess before the angels of God:
9 But he that denieth me before men shall be denied before the angels of God.
Romans 10:9-13 (KJV)
9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
11 For the scripture saith, Whosoever believeth on him shall not be ashamed.
12 For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him.
13 For whosoever shall call upon the name of the Lord shall be saved.
1 Corinthians 12:3 (KJV)
3 Wherefore I give you to understand, that no man speaking by the Spirit of God calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Ghost.
Philippians 2:9-11 (KJV)
9 Wherefore God also hath highly exalted him, and given him a name which is above every name:
10 That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth;
11 And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.
1 John 2:23 (KJV)
23 Whosoever denieth the Son, the same hath not the Father: he that acknowledgeth the Son hath the Father also.
1 John 4:2,3,15 (KJV)
2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
15 Whosoever shall confess that Jesus is the Son of God, God dwelleth in him, and he in God.