Daniel 1:19

1:19 When the king spoke with them, he did not find among the entire group ¹  anyone like Daniel, Hananiah, Mishael, or Azariah. So they entered the king’s service. ² 

Daniel 4:13

4:13 While I was watching in my mind’s visions ³  on my bed,

a holy sentinel ⁴  came down from heaven.

[1:19]  ¹ tn Heb “from all of them.”

[1:19]  ² tn Heb “stood before the king.”

[4:13]  ³ tn Aram “the visions of my head.”

[4:13]  ⁴ tn Aram “a watcher and a holy one.” The expression is a hendiadys; so also in v. 23. This “watcher” is apparently an angel. The Greek OT (LXX) in fact has ἄγγελος (angelo", “angel”) here. Theodotion simply transliterates the Aramaic word (’ir). The term is sometimes rendered “sentinel” (NAB) or “messenger” (NIV, NLT).