I ... bound - when I saw their arms as it were relaxed with various disasters, I bound them so as to strengthen their sinews; image from surgery [Calvin]. Maurer translates, “I instructed them” to war (Psa 18:34; Psa 144:1), namely, under Jeroboam II (2Ki 14:25). Grotius explains, “Whether I chastised them (Margin) or strengthened their arms, they imagined mischief against Me.” English Version is best.