na jaayate mriyate vaa kadaachinnaayam bhootvaa bhavitaa vaa na bhooyaha |
ajo nityaha shaashvatoyam puraano na hanyate hanyamaane shareere || 20 ||

It (the eternal essence) is neither born, nor does it ever die; nor is it that having come into existence, it will again cease to exist. It is birthless, eternal, changeless and primeval, it is not slain when the body is killed.

na : not
jaayate : born
mriyate : dies
vaa : and
kadaachita : ever
na : not
ayam : this
bhootvaa : having come into existence
abhavitaa : ceases to be
vaa na : it is not the case that
bhooyaha : again
ajaha : birthless
nityaha : timeless
shaashvataha : changeless
puraano : primeval
na hanyate : slain
hanyamaane : when slain
shareere : the body

This shloka reinforces the attributes of the eternal essence that we have seen so far, that it is eternal and changeless. Any material object, including the human body, goes through six types of modifications: birth, exist, change, grow, decay, and to perish. The eternal essence is beyond all these modifications, hence it is changeless.

Two additional qualities of the eternal essence are provided here. The first is that it is birthless. It is logical that it should be birthless, otherwise it could not be eternal and timeless. And since it is birthless, it would have always existed, therefore it is primeval.

Note the change in meter to highlight the importance of this shloka.

Footnotes
1. “Om namoji aadya” is the very first ovi or stanza of the Jnyaneshwari. Sant Jnyaneshwar invokes the primeval quality of the eternal essence by using the word “aadya” which means primeval.