Passage
Jesus answered and said to them: Although I give testimony of myself, my testimony is true: for I know whence I came and whither I go.
Jesus answered and said to them: Although I give testimony of myself, my testimony is true: for I know whence I came and whither I go.
John 8:12 Again therefore, Jesus spoke to: them, saying: I am the light of the world. He that followeth me walketh not in darkness, but shall have the light of life.
John 8:13 The Pharisees therefore said to him: Thou givest testimony of thyself. Thy testimony is not true.
John 8:14 Jesus answered and said to them: Although I give testimony of myself, my testimony is true: for I know whence I came and whither I go.
John 8:15 You judge according to the flesh: I judge not any man.
John 8:16 And if I do judge, my judgment is true: because I am not alone, but I and the Father that sent me.
The verse centers on "jesus", "answered", "said", "although", "give", "testimony", and "myself". It is saying that the verse draws attention to "jesus" and "answered", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 13's "The Pharisees therefore said to him Thou..." into verse 15's "You judge according to the flesh I...", so "jesus" and "answered" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "jesus" and "answered" with trust shaped by these words, not by a vague optimism outside the passage.