In Luke 3:23-38, Luke presents the genealogy of our Lord Jesus from Mary all the way back in time to the first man, Adam, who also is called the Son of God. Adam was the son of God by creation, Jesus is the Son of God as eternal Deity.
And here in the Gospel of Luke, Jesus is the God-man, virgin born son, eternal deity and sinless humanity in one undivided person.
That Jesus was a real man, Luke gives, in writing to Theophilus, His genealogy tracing his family lineage from Mary all the way back to the beginning of time when God created the first man, Adam.
Matthew’s genealogy, on the other hand, begins with Abraham and comes forward thru time to Joseph to reveal Jesus as the virgin born son of Mary.
As a man, Jesus was to be tested.
Here is Dr. Mitchell on the Unchanging Word Bible Broadcast, Luke 3:23.