אַשְׁרֵ֣י הַ֭גּוֹי אֲשֶׁר־יְהוָ֣ה אֱלֹהָ֑יו הָעָ֓ם ׀ בָּחַ֖ר לְנַחֲלָ֣ה לֽוֹ׃
Happy is the nation whose God is the LORD; The people whom He hath chosen for His own inheritance.
Read midrashic interpretation of Psalms 33:12: and classical rabbinic exegesis.