Judges 6:22 (WEB)
Gideon saw that he was the LORD’s angel; and Gideon said, “Alas, Lord GOD! Because I have seen the LORD’s angel face to face!”
Catechism · 1
“…hand; communicated the law by their ministry; led the People of God; announced births and callings; and assisted the prophets, just to cite a few examples.” — Catechism footnote: Cf. Job 38:7 (where angels are called "sons of God"); Gen 3:24; 19; 21: 17; 22:11; Acts 7:53; Ex 23:20-23; Judg 13; 6:11-24; Is 6:6; 1 Kings 19:5.