filius, filii (m)
2nd declension. In nomine Patris et Filii et Spiritus Sancti. Filius Dei (Son of God)
In Scripture
Deum nemo vidit umquam : unigenitus Filius, qui est in sinu Patris, ipse enarravit.
No man hath seen God at any time: the only begotten Son who is in the Bosom of the Father, he hath declared him.
John 1 · 18