Proverbs 7:4
2 Keep my commands so that you may live, and obey my instruction as your most prized possession. 3 Bind them on your forearm; write them on the tablet of your heart. 4 Say to wisdom, “You are my sister,” and call understanding a close relative 5 so that they may keep you from the adulterous woman, from the loose woman who has flattered you with her words. 6 For at the window of my house through my window lattice I looked out,
Song of Solomon 4:9
Song of Songs7 You are altogether beautiful, my darling! There is no blemish in you! 8 Come with me from Lebanon, my bride; come with me from Lebanon. Descend from the crest of Amana, from the top of Senir, the summit of Hermon, from the lions’ dens and the mountain haunts of the leopards. 9 You have stolen my heart, my sister, my bride! You have stolen my heart with one glance of your eyes, with one jewel of your necklace. 10 How delightful is your love, my sister, my bride! How much better is your love than wine; the fragrance of your perfume is better than any spice! 11 Your lips drip sweetness like the honeycomb, my bride; honey and milk are under your tongue. The fragrance of your garments is like the fragrance of Lebanon.
Notes and References
"... The formulaic address in the lament for the dead should also be understood similarly (1 Kings 13:30, “Alas, my brother!”; Jeremiah 22:18, “Alas my brother, alas my sister!”; 2 Samuel 1:26 is probably influenced by this usage: “I am sorrowful for you, my brother Jonathan”. “My sister (bride)” occurs as a tender metaphor for the beloved (in Song of Solomon otherwise named “friend”) in Song of Solomon 4:9, 12; 5:1, as in love poetry and in Ugaritic (KTU 1.18.I.24, Anat to Aqhat: “You are my brother, I am your sister”). Compare further Proverbs 7:4, “Say to wisdom: you are my sister,” of personified wisdom ..."
Jenni, Ernst, and Claus Westermann Theological Lexicon of the Old Testament (p. 144) Hendrickson Publishers, 1997