The Name

The name of the LORD and his son are the most important keys to salvation (Acts 4:12). The elect will call on the name of the LORD (Zechariah 13:9), which means by deduction, not knowing the name of the LORD means that you're not of the Elect

Baruch 2:31

And shall know that I am the Lord their God: for I will give them an heart, and ears to hear:

Baruch 2:32

And they shall praise me in the land of their captivity, and think upon my name,