Ephesians 3:4

Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)

by which, when you read, you can perceive my understanding in the mystery of Christ;

whereby, when ye read, ye can perceive my understanding in the mystery of Christ;

in regard to which ye are able, reading `it', to understand my knowledge in the secret of the Christ,

In reading this, then, you will be able to understand my insight into the mystery of Christ,