Hast thou not known, hast thou not heard, That firm remains on high The everlasting throne of him Who formed the sea and sky? Art thou afraid his power shall fail When comes thy evil day? And can an all-creating arm Grow weary or decay? Supreme in wisdom as in power The Rock of Ages stands; Though him thou canst not see, nor trace The working of his hands. He gives the conquest to the weak, Supports the fainting heart; And courage in the evil hour His heavenly aids impart. Mere human power shall fast decay, And youthful vigour cease; But they who wait upon the Lord In strength shall still increase.