Let’s look at Psalm 119. It is the longest psalm as well as the longest chapter in the Bible. It is referred to in Hebrew by its opening words, "Ashrei temimei derech" ("happy are those whose way is perfect"). It is the prayer of one who delights in and lives by the Torah, the sacred law. There are 176 verses, 8 verses for each of the 22 Hebrew letters. The first 8 verses each start with the Hebrew letter Aleph ,the next 8 with Bet and so on through the alphabet (alephbet). We have lost the amazing beauty of the psalm in translation. However, one thing is very obvious: there is a repetition of the following words throughout all of the verses: law, statutes, ways, precepts, decrees, commands, and word.
For example in the fourth stanza there are several words that start with Dalet, the fourth letter, among them the word “derech" which is translated “way”, “commands” and “precepts” in the NIV Bible or “way”, “testimonies”, and “commandments” in the King James Bible. If you go through all 176 verses and note how often these words are used, it seems pretty obvious that the Lord is telling us to know his WORD.
(Parts taken from Crossing the Scriptures)