1 Peter says this explicitly, the title “Father” is used in 2 Pet 1:17 and Jude 1 as part of differentiating “the Father” from Jesus Christ. Only James is not clear about this point (Jas 1:27 may be referring to God as the Father of orphans and Jas 3:9 is probably referring to the creator God as “Lord and Father”), but then James has much less to say about Christology than any of the other three. Yet it is clear that he agrees with the others (and with Paul) on the core concept of the “good news”