Bible Gateway:
https://www.biblegateway.com/passage/?search=Psalm+25&version=AMP
Bible Hub Commentary Psalm 25:14
https://biblehub.com/commentaries/psalms/25-14.htm
Ellicott's Commentary for English Readers
(14) Secret.—Rather, familiar intercourse (so Symmachus). The Hebrew word primarily means couch, and then the confidential talk of those sitting on it. In Jeremiah 6:11; Jeremiah 15:17, the word is rendered “assembly.” The English word board offers a direct analogy. The word divan seems to have had a history exactly the reverse. (Comp. Psalm 55:14, “sweet counsel.”)

And he will shew them his covenant.—Literally, and his covenant to make them know. This is closely parallel with the preceding clause. The communion enjoyed by the pious is the highest covenant privilege.

Pulpit Commentary
Verse 14. - The secret of the Lord is with them that fear him. God favours those who fear him with secret and confidential communion (comp. Proverbs 3:32). He "comes unto them, and makes his abode with them" (John 14:23), and "teaches them" (John 14:26), and enlightens them, and leads them in his way, and learns them (ver. 5), and "seals their instruction" (Job 33:16). And he will show them his covenant; i.e. make them see the full force of it, since his "commandment is exceeding broad" (Psalm 119:96).