en_tn_condensed/jhn/01/18.md

the only God

"the only Son, who is himself God"

the only God

"the only begotten God" or "the only begotten Son, who is himself God" or "the only Son who proceeds from God and is himself God"

Father

This refers to God the Father. It is best to translate “Father” with the same word that your language uses to refer to a human father.