Commentary for I Samuel 2:35

וַהֲקִימֹתִ֥י לִי֙ כֹּהֵ֣ן נֶאֱמָ֔ן כַּאֲשֶׁ֛ר בִּלְבָבִ֥י וּבְנַפְשִׁ֖י יַעֲשֶׂ֑ה וּבָנִ֤יתִי לוֹ֙ בַּ֣יִת נֶאֱמָ֔ן וְהִתְהַלֵּ֥ךְ לִפְנֵֽי־מְשִׁיחִ֖י כָּל־הַיָּמִֽים׃

And I will raise Me up a faithful priest, that shall do according to that which is in My heart and in My mind; and I will build him a sure house; and he shall walk before Mine anointed for ever.

Rashi on I Samuel