Is telling a half-truth a lie?

Does honesty require me to answer a question with all the information I have?

When the high priest charged the Lord to tell if He were the Christ, the Son of God, He responded with a complete answer. By His reference to Scripture (Daniel 7:13; Psalm 110:1,2; 2:2,7), He provided sufficient information to fully answer the question, although He could have said more. Therefore, an answer need give only the information requested.

A response that hurts the hearer or injures his relationship with another will not edify or impart grace to the hearer (Ephesians 4:29). There must be a better answer.

D. Oliver