Passage
and ye shall know the truth, and the truth shall set you free.
John 8:32 (DBY)
Nearby Context
John 8:30 As he spoke these things many believed on him.
John 8:31 Jesus therefore said to the Jews who believed him, If ye abide in my word, ye are truly my disciples;
John 8:32 and ye shall know the truth, and the truth shall set you free.
John 8:33 They answered him, We are Abraham's seed, and have never been under bondage to any one; how sayest thou, Ye shall become free?
John 8:34 Jesus answered them, Verily, verily, I say to you, Every one that practises sin is the bondman of sin.
Study Lenses
The verse centers on "shall", "truth", and "free". It is saying that the verse draws attention to "shall" and "truth", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 31's "Jesus therefore said to the Jews who..." into verse 33's "They answered him We are Abraham's seed...", so "shall" and "truth" 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 "shall" and "truth" with trust shaped by these words, not by a vague optimism outside the passage.