Charles Ellicott Commentary 2 Samuel 23:2

"The Spirit of Jehovah spake by me, And his word was upon my tongue." — 2 Samuel 23:2 (ASV)

The Spirit of the Lord spake by me. — In accordance with 2 Samuel 23:1, there is here, and also in the next clause, a most explicit assertion that this was spoken under the prompting and guidance of the Divine Spirit.