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 2:30

For I knew that they would not hear me, because it is a stiffnecked people: but in the land of their captivities they shall remember themselves.