דּוֹדִ֥י צַח֙ וְאָד֔וֹם דָּג֖וּל מֵרְבָבָֽה׃
나의 사랑하는 자는 희고도 붉어 만 사람에 뛰어난다
Rashi
Tzeltzoch is a combination of the words צֵל לַצַּח of the Holy One, Blessed is He, Who is pure and ruddy;2Shir Hashirim 5:10. and this is Yerusholayim.
Rabbeinu Bahya
It is equally possible (our author speaking) to understand the word אותות as related to the word אות as in אות נפשו, “the desire of his soul,” or as like בכל אות נפשך, “in accordance with all you desire” (Deut. 12,20). This would reflect what we have learned in the Midrash that when the Israelites had observed that the angels who had descended on earth at the time G’d descended on Mount Sinai had all had flags with them and that the Israelites ever since had felt an urgent desire to have flags also (Compare Shir Hashirim Rabbah 2,13 on the words ודגלו אהבה). There are numerous other verses interpreted in similar fashion (compare Song of Songs 2,4; Tanchuma Bamidbar 14).
Rashi
ואנוהו Onkelos translates this in the sense of a dwelling (viz., I will build Him a temple) as in (Isaiah 33:20) “a peaceful habitation (נוה)” and in (Isaiah 65:10) “a dwelling (נוה) for flocks”. Another explanation of ואנוהו is that it has the sense of נוי, “beauty”, and the meaning is: I will relate His splendour and praiseworthiness to the inhabitants of the world as, for example, was actually done by Israel: (Song 5:9, 10) The nations of the world ask, “What is thy beloved more than another beloved?” … and Israel replies, “My beloved is white and ruddy”, and thus you will find it in that whole section (cf. Mekhilta).