Updated: Aug 12, 2019
[Orpah kissed her mother-in-law, וַתִּשַּׁ֤ק עָרְפָּה֙ לַחֲמוֹתָ֔הּ] And Orpah gave a kiss to her mother-in-law (Montanus). And she kissed to her mother-in-law, understanding, the hand, or the mouth (Piscator). She kissed her mother-in-law (Pagnine, Septuagint, Junius and Tremellius). Understanding, and she returned (Vatablus), or, she departed (Junius and Tremellius). With a kiss given, she bid her farewell; as in Genesis 31:28; 1 Kings 19:20 (Drusius). Because she had been moved, not by Religion, but by humanity, to follow her mother-in-law (Junius).
Orpah kissed her mother-in-law, that is, departed from with a kiss, as the manner was, Genesis 31:28; 1 Kings 19:20.
[Ruth clave to her mother-in-law] Most firmly, like those things that are joined glutine, with glue: for it is דָּבַק, adglutinari, to be joined with glue, and it signifies the closest possible bond, which sort is between a husband and wife, Genesis 2:24; Matthew 19:5; Ephesians 5:31 (Drusius). That is, she accompanied her, and did not withdraw from her (Vatablus).
 Hebrew: וַתִּשֶּׂ֣נָה קוֹלָ֔ן וַתִּבְכֶּ֖ינָה ע֑וֹד וַתִּשַּׁ֤ק עָרְפָּה֙ לַחֲמוֹתָ֔הּ וְר֖וּת דָּ֥בְקָה בָּֽהּ׃
 Ecclesiasticus 12:9: “In the prosperity of a man enemies will be grieved: but in his adversity even a friend will depart.”
 Hebrew: וְר֖וּת דָּ֥בְקָה בָּֽהּ׃.
 Genesis 2:24: “Therefore shall a man leave his father and his mother, and shall cleave (וְדָבַק) unto his wife: and they shall be one flesh.”