Вы искали: et genua parere (Латинский - Английский)

confortate manus dissolutas et genua debilia roborat
strengthen ye the weak hands, and confirm the feeble knees.

vacillantes confirmaverunt sermones tui et genua trementia confortast
thy words have upholden him that was falling, and thou hast strengthened the feeble knees.

tunc regis facies commutata est et cogitationes eius conturbabant eum et conpages renum eius solvebantur et genua eius ad se invicem conlidebantu
then the king's countenance was changed, and his thoughts troubled him, so that the joints of his loins were loosed, and his knees smote one against another.