What is the Longest Chapter in the Bible?

What is the longest chapter in the Bible -- and what word or concept is found in almost every one of its verses?

The longest chapter in the Bible is Psalm 119.  

Psalm 119 is 176 verses long.  It is also known for the fact that it is all about God's Word. 

Almost every one of its 176 verses contains a promise or description of God's Word. Verses like "Your Word is a lamp unto my feet, and a light to my path" are well known.  

"How can a young man keep his way pure?  By keeping it according to Your Word."

"All Your words are true; all Your righteous laws are eternal."

"Great peace have they who love Your law, and nothing causes them to stumble."

It is a wonderful Psalm to study and meditate on, for it reveals great truths about God's eternal Word!