But they that wait upon the LORD shall renew [their] strength; they shall mount up with wings as eagles; they shall run, and not be weary; [and] they shall walk, and not faint.
Ver. 31. Shall renew their strength.] Heb., Shall change, quotidie seipsis fortiores prodeuntes. By the new "supplies of the Spirit," Php 1:19 they shall pass from strength to strength. Psa 84:7 "They shall mount as eagles." see Psa 103:5 R. Saadias saith, that every tenth year the eagle mounteth up to the orb of the sun, singeth her wings there, and so reneweth her age, till she be a hundred.