Matthew Poole and continuators on 1 Samuel 1:17

17 Then Eli answered and said, Go in peace : and the God of Israel grant thee thy petition that thou hast asked of him.

I recal my Censure, and give thee my Blessing, and wish thee Peace, i. e. a quiet and composed mind, free from whatsoever it is that Grieves and Oppresses thee; and withal, good Success and Prosperity in what thou desirest; for Peace is a very comprehensive word among the Hebrews.

Or, will grant: for it may be either a Prayer, or a Prediction, which he might deliver, either from the consideration of Gods known goodness and readiness to hear Prayers: or he might be directed to say so by a special instinct of Gods Spirit, which sometimes was given to the High-Priests, even when they were wicked men, as Iohn 11. 51. and much more when they were Holy Men, as Eli was. And some add, that he was a Prophet.