Yet you have not known Him, but I know Him. And if I say, "I do not know Him,' I shall be a liar like you; but I do know Him and keep His word.
John 8:55
Surrounding context
8:54 Jesus answered, "If I honor Myself, My honor is nothing. It is My Father who honors Me, of whom you say that He is your God.
8:55 Yet you have not known Him, but I know Him. And if I say, "I do not know Him,' I shall be a liar like you; but I do know Him and keep His word.
8:56 Your father Abraham rejoiced to see My day, and he saw it and was glad."