1 tn Heb “fingers” (so KJV and many other English versions). In light of Deut 6:8, “fingers” appears to be a metonymy for the lower part of the arm.
2 sn This is an allusion to Deut 6:8. Binding the teachings on the fingers and writing them on the tablets here are implied comparisons for preserving the teaching in memory so that it can be recalled and used with ease.
3 sn The metaphor is meant to signify that the disciple will be closely related to and familiar with wisdom and understanding, as close as to a sibling. Wisdom will be personified in the next two chapters, and so referring to it as a sister in this chapter certainly prepares for that personification.
