1 Chronicles 11:25 (BSB)

He was most honored among the Thirty, but he did not become one of the Three. And David appointed him over his guard.

From 1 Chronicles 11. Also in the ESV.

Commentary on 1 Chronicles 11:25

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 1 Chronicles 11:10-47: We have here an account of David's worthies, the great men of his time that served him and were preferred by him. The first edition of this catalogue we had, Sa2 23:8, etc. This is much the same, only that those named here from Ch1 11:41 to the end are added. Observe, I. The connexion of this catalogue with that which is said concerning David, Ch1 11:9. 1.
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on 1 Chronicles 11:10-47: A CATALOGUE OF HIS WORTHIES. (1Ch. 11:10-47) These . . . are the chief of the mighty men--(See on Sa2 23:8). They are here described as those who held strongly with him (Margin) to make him king, &c. In these words the sacred historian assigns a reason for introducing the list of their names, immediately after his account of the election of David as king...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on 1 Chronicles 11:25: David set him over his guard--the Cherethites and Pelethites that composed the small bodyguard in immediate attendance on the king.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on 1 Chronicles 11:25: Behold, he was honourable among the thirty, but attained not to the [first] three: and David set him over his guard. (f) Meaning, those three who brought the water to David.