"And you, bring near to yourself Aaron your brother" (Exodus 28:1). This is what Scripture says, "Happy is the one You choose and bring near" (Psalms 65:5). Happy is the one whom the Holy One, blessed be He, chose even though He did not draw him near, and happy is the one whom He drew near even though He did not choose him. Who is the one He chose? This is Abraham, as it is said, "You are the LORD, the God who chose Abram" (Nehemiah 9:7); yet He did not draw him near, and Abraham drew himself near. Jacob, the Holy One, blessed be He, chose him, as it is said, "Israel, in whom I take pride" and, "for the LORD has chosen Jacob for Himself" (Psalms 135:4); yet He did not draw him near, and Jacob drew himself near, as it is said, "And Jacob was a wholehearted man, dwelling in tents" (Genesis 25:27). Moses, He chose him, as it is said, "Moses His chosen one" (Psalms 106:23), and Moses drew himself near. David, He chose him, as it is said, "And He chose David His servant" (Psalms 78:70), and David drew himself near, as it is said, "I am a companion to all who fear You" (Psalms 119:63). Happy are these whom the Holy One, blessed be He, chose even though He did not draw them near. And there are those whom He drew near though He did not choose them: Jethro, the Holy One, blessed be He, drew near though He did not choose him; Rahab the harlot, the Holy One, blessed be He, drew near though He did not choose her. Happy is Aaron in double measure, for the Holy One, blessed be He, chose him and drew him near, as it is said, "and to choose him out of all the tribes of Israel to be a priest to Me" (1 Samuel 2:28), and it is written, "And you, bring near to yourself Aaron your brother." Therefore David praises them, "Happy is the one You choose and bring near, that he may dwell in Your courts" (Psalms 65:5). "To serve Me as priest" (Exodus 28:1): in every place where "to Me" is said, it is forever and to all eternity.
Chosen and Brought Near and Why Aaron Is Blessed Twice Over
Yalkut Shimoni on Torah 379:1
(שמות כח א) וְאַתָּה הַקְרֵב אֵלֶיךָ אֶת אַהֲרֹן אָחִיךָ. זֶה שֶׁאָמַר הַכָּתוּב (תהלים סה, ה) "אַשְׁרֵי תִּבְחַר וּתְקָרֵב", אַשְׁרֵי מִי שֶׁבְּחָרוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא אַף עַל פִּי שֶׁלֹּא קֵרְבוֹ, וְאַשְׁרֵי מִי שֶׁקֵּרְבוֹ אַף עַל פִּי שֶׁלֹּא בְּחָרוֹ. אֵי זֶהוּ שֶׁבְּחָרוֹ, זֶה אַבְרָהָם, שֶׁנֶּאֱמַר (נחמיה ט, ז) "אַתָּה ה' הָאֱלֹהִים אֲשֶׁר בָּחַרְתָּ בְּאַבְרָם", אֲבָל הוּא לֹא קֵרְבוֹ, וְקֵרֵב אֶת עַצְמוֹ. יַעֲקֹב, בְּחָרוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא, שֶׁנֶּאֱמַר (יַעֲקֹב) ["וְיִשְׂרָאֵל] בָּחַרְתִּי בּוֹ", וְאוֹמֵר (תהלים קלה, ד) "כִּי יַעֲקֹב בָּחַר לוֹ יָהּ", וְהוּא לֹא קֵרְבוֹ, וְקֵרֵב אֶת עַצְמוֹ, שֶׁנֶּאֱמַר "וְיַעֲקֹב אִישׁ תָּם יוֹשֵׁב אֹהָלִים". מֹשֶׁה, בְּחָרוֹ, שֶׁנֶּאֱמַר (תהלים קו, כג) "מֹשֶׁה בְחִירוֹ", וְקֵרֵב אֶת עַצְמוֹ. דָּוִד, בְּחָרוֹ, שֶׁנֶּאֱמַר (שם עח, ע) "וַיִּבְחַר בְּדָוִד עַבְדּוֹ", וְקֵרֵב אֶת עַצְמוֹ שֶׁנֶּאֱמַר, "חָבֵר אָנִי לְכָל אֲשֶׁר יְרֵאוּךָ". אַשְׁרֵיהֶן אֵלּוּ שֶׁבְּחָרָן הַקָּדוֹשׁ בָּרוּךְ הוּא אַף עַל פִּי שֶׁלֹּא קֵרְבָן. וְיֵשׁ שֶׁקֵּרְבָן וְלֹא בְּחָרָן. יִתְרוֹ, קֵרְבוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא וְלֹא בְּחָרוֹ. רָחָב הַזּוֹנָה, קֵרְבָהּ הַקָּדוֹשׁ בָּרוּךְ הוּא וְלֹא בְּחָרָהּ. אַשְׁרֵי אַהֲרֹן בְּכִפְלַיִם, שֶׁבְּחָרוֹ הַקָּדוֹשׁ בָּרוּךְ הוּא וְקֵרְבוֹ, שֶׁנֶּאֱמַר (שמואל א ב, כח) "וּבָחֹר אֹתוֹ מִכָּל שִׁבְטֵי יִשְׂרָאֵל לִי לְכֹהֵן", וּכְתִיב וְאַתָּה הַקְרֵב אֵלֶיךָ אֶת אַהֲרֹן אָחִיךָ, לְכָךְ דָּוִד מְשַׁבְּחָן (תהלים סה, ה) "אַשְׁרֵי תִּבְחַר וּתְּקָרֵב יִשְׁכֹּן חֲצֵרֶיךָ". לְכַהֲנוֹ לִי. בְּכָל מָקוֹם, שֶׁנֶּאֱמַר לִי, הֲרֵי זֶה לְעוֹלָם וּלְעוֹלְמֵי עוֹלָמִים (בְּרֶמֶז שס"ד).