Yodh [י] is the tenth letter of the Hebrew alphabet as well as the smallest, the famous “jot” of “jot and tittle” in the KJV of Matthew 5:18, corresponding with the English “i”. In Greek, it is iota, the smallest particle. “Not an iota will pass from the Law until all is accomplished.” A yodh is a single point, but it also has the numeric value of ten in Hebrew.
The Old Testament personal name of God begins with yodh (in orange) and looks like this:
יהוה
Every verse of this section of Psalm 119 also begins with yodh.