John 14:6-11
6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me. 7 If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him. 8 Philip saith unto him, Lord, shew us the Father, and it sufficeth us. 9 Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father? 10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works. 11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works' sake. (KJV)

Romans 10:9-11
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. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation. For the scripture saith, Whosoever believeth on him shall not be ashamed. (KJV)