And if the bishop could not have 2 children, then he should not be bishop.

Isn't that right?

And if one of the children was jailed, then he would be disqualified.

And if one of them died, then he didn't have two children and he should be disqualified.

And if his wife divorced him, then he again would be disqualified.

And even if he's married with two children, then he can anoint himself bishop.

Therefore he did not have to have religious education, but just have a wife and two or more children, then he can anoint himself bishop.