Judges 13:21

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.

Judges 6:22

And when Gideon perceived that he was an angel of the LORD, Gideon said, Alas, O Lord GOD! for because I have seen an angel of the LORD face to face.

Judges 13:16

And the angel of the LORD said to Manoah, Though thou shouldst detain me, I will not eat of thy bread: and if thou wilt offer a burnt-offering, thou must offer it to the LORD. For Manoah knew not that he was an angel of the LORD.

Hosea 12:4-5

Yes, he had power over the angel, and prevailed: he wept, and made supplication to him: he found him in Beth-el, and there he spoke 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 he was an angel of the LORD, Gideon said, Alas, O Lord GOD! for because I have seen an angel of the LORD face to face.
Hosea 12:4
Yes, he had power over the angel, and prevailed: he wept, and made supplication to him: he found him in Beth-el, and there he spoke with us;