Translation: What is the law regarding the blessings of a non-Jew, whether he is a Torah scholar or not? Rabbi says: "If he blesses with enthusiasm, he is a Torah scholar, and if not, he is an ignoramus." Abaye said to Rav Dimi: "But isn't it written (in 2 Samuel 7:29), 'And may Your house be blessed forever from Your blessing'? This is a question." Likewise, in another verse (in Psalm 81:11), it is written, "Open your mouth wide, and I will fill it." This one is written in matters of Torah.
Translation What Is the Law Regarding the Blessings
Ein Yaakov, Berakhot 7:16