Commentaries:
Barnes' Notes
Thou bearest record of thyself - Thou art a witness for thyself, or in thy own case. See John 5:31. The law required two witnesses in a criminal case, and they alleged that as the only evidence which Jesus had was his own assertion, it could not be entitled to belief.
Is not true - Is not worthy of belief, or is not substantiated by sufficient evidence.
Other Barnes' Notes entries containing John 8:13:
Isaiah 55:3
Matthew 19:1
John 5:31
John 5:31
1 Timothy 3:13
DISCLAIMER: Church of the Great God (CGG) provides these resources to aid the individual in studying the Bible. However, it is up to the individual to "prove all things, and hold fast to that which is good" (I Thessalonians 5:21). The content of these resources does not necessarily reflect the views of CGG. They are provided for information purposes only.