וַיֹּ֨אמֶר אֲלֵיהֶ֜ם עֵ֧ד יְהוָ֣ה בָּכֶ֗ם וְעֵ֤ד מְשִׁיחוֹ֙ הַיּ֣וֹם הַזֶּ֔ה כִּ֣י לֹ֧א מְצָאתֶ֛ם בְּיָדִ֖י מְא֑וּמָה וַיֹּ֖אמֶר עֵֽד׃ (פ)
Rashi on I Samuel
And they said [as one], "Witnessed." A heavenly voice came out and said, '[I am] a witness.' This is one of three places in which the holy spirit entered the earthly court, as it is stated in Maseches Makos.5 23b.