[12:12] 2 sn A quotation from Isa 35:3. Strengthen your listless hands and your weak knees refers to the readers’ need for renewed resolve and fresh strength in their struggles (cf. Heb 10:36-39; 12:1-3).
[12:13] 3 sn A quotation from Prov 4:26. The phrase make straight paths for your feet is figurative for “stay on God’s paths.”