John 1:18

No human eye has ever seen God: the only Son, who is in the Father's bosom--He has made Him known.

Acts 7:30-38

"But at the end of forty years there appeared to him in the Desert of Mount Sinai an angel in the middle of a flame of fire in a bush.

1 Timothy 6:16

who alone possesses immortality, dwelling in unapproachable light, and whom no man has seen or can see. To Him be eternal honour and power! Amen.

Treasury of Scripture Knowledge

Summary

And the angel of the LORD said unto her, I will multiply thy seed exceedingly, that it shall not be numbered for multitude.

Bible References

The angel

John 1:18
No human eye has ever seen God: the only Son, who is in the Father's bosom--He has made Him known.
Acts 7:30
"But at the end of forty years there appeared to him in the Desert of Mount Sinai an angel in the middle of a flame of fire in a bush.
1 Timothy 6:16
who alone possesses immortality, dwelling in unapproachable light, and whom no man has seen or can see. To Him be eternal honour and power! Amen.