Jamieson, Fausset and Brown on Song of Solomon 7:4

4. tower of ivory--In So 4:4, Jesus Christ saith, "a tower of David builded for an armory." Strength and conquest are the main thought in His description; here, beauty and polished whiteness; contrast So 1:5.

fishpools--seen by Burckhardt, clear (Re 22:1), deep, quiet, and full (1Co 2:10, 15).

Heshbon--east of Jordan, residence of the Amorite king, Sihon (Nu 21:25, &c.), afterwards held by Gad.

Bath-rabbim--"daughter of a multitude"; a crowded thoroughfare. Her eyes (So 4:1) are called by Jesus Christ, "doves' eyes," waiting on Him. But here, looked on by the daughters or Jerusalem, they are compared to a placid lake. She is calm even amidst the crowd (Pr 8:2; Joh 16:33).

nose--or, face.

tower of Lebanon--a border-fortress, watching the hostile Damascus. Towards Jesus Christ her face was full of holy shame (see on So 4:1; So 4:3); towards spiritual foes, like a watchtower (Ha 2:1; Mr 13:37; Ac 4:13), elevated, so that she looks not up from earth to heaven, but down from heaven to earth. If we retain "nose," discernment of spiritual fragrance is meant.