Judges 13:21

But the angel of the LORD did no more appear unto Manoah and his wife. And then Manoah knew that it was an angel of the LORD,

Judges 6:22

And when Gideon perceived that it was an angel, he said, "Alas my Lord Jehovah, that I have seen an angel of the LORD face to face."

Judges 13:16

And the angel of the LORD said unto Manoah, "Though thou make me abide, I will not eat of thy meat. And moreover, if thou wilt prepare a burnt offering, that thou must offer unto the LORD." For Manoah wist not that it was an angel of the LORD.

Hosea 12:4-5

He strove with the angel, and gat the victory: so that he prayed and desired him. He found him at Bethel, and there he talked with us.

Treasury of Scripture Knowledge

Summary

But the angel of the LORD did no more appear to Manoah and to his wife. Then Manoah knew that he was an angel of the LORD.

Bible References

Knew

Judges 6:22
And when Gideon perceived that it was an angel, he said, "Alas my Lord Jehovah, that I have seen an angel of the LORD face to face."
Hosea 12:4
He strove with the angel, and gat the victory: so that he prayed and desired him. He found him at Bethel, and there he talked with us.