The Hebrew word yashar has to do with being level or straight. In this case, God is the reference point and He alone deserves the name Upright One. God is the standard of righteousness and justice against which all others are compared and found warped. Yet, in Jesus (Yeshua‘), we are counted as upright again. Another name ’El Yeshurun, God of the upright one, celebrates that truth.
The Upright One in Hebrew:
Strong’s Concordance number: 3477
Bible reference: Isa. 26:7
The path of the righteous is level;
you, the Upright One, make the way of the righteous smooth. (Isaiah 26:7 NIV)
The Message Bible calls God “the Leveler.”
Similar names for God and Jesus are Righteous One and Holy One.