Adam Clarke on 1 Samuel 1:9

Eli - sat upon a seat - על הכסא al hakkisse, upon the throne, i.e., of judgment; for he was then judge of Israel.

By a post of the temple of the Lord - I think this is the first place where היכל יהוה heychal Yehovah, "temple of Jehovah," is mentioned. This gives room for a strong suspicion that the books of Samuel were not compiled till the first temple was built, or after the days of Solomon. After this the word temple is frequent in the books of Kings, Chronicles, and in the prophets. Perhaps those Psalms in which this word occurs were, like many others in the Psalms, not of David's composition; some of them were evidently made long after his time.