Abraham had the favor of God upon his life as well. God purposefully revealed Himself to Abram/Abraham because God made Abraham the "Father" of His Chosen people.
We see and entertain Angels today as well.
The Fallen Angels had children with women.
But the FATHER is different than an Angel. We are Commanded to worship the FATHER, not the Angel!
The Father has form.
Not an invisible Spirit.
He is tangible and Spirit at the same time.