John 8:19
So, the Jewish authorities said to Him, "Where is your father?" Jesus answered, "You people do not know me or my Father. If you [did] know me, you would know my Father also."
John 8:54-55
Jesus answered them, "If I were to honor myself, that honor would be worthless. [But] it is my Father who honors me [and] you say He is your God.
John 16:3
And they will do these things because they have not known [either] the Father or me.
John 17:3
And this is never ending life; that people may know you [as] the only true God, and Jesus Christ, the One whom you have sent.
John 17:6
I have revealed your name [i.e., your power and character] to the men you gave me out of the world [i.e., the apostles]. They belonged to you, but you gave them to me, and they have obeyed your word.
Titus 1:16
These people claim to know God [as Savior], but they deny Him by their actions, so they are detestable and disobedient and unfit for doing anything good.
1 John 2:3-4
And here is how we can be assured that we know Jesus [i.e., that we are saved]: [It is] by obeying what He commands us.