II. Now turn, in the next place, to the blessed opposite possibility of inexhaustible and immortal strength. '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; they shall walk and not faint.' The life of nature tends inevitably downward, but there may be another life within the life of nature, which shall have the opposite motion, and tend as certainly upwards. 'The youths shall faint and be weary'--whether they be Christians or not, the law of decay and fatigue will act upon them; but there may be that within each of us, if we will, which shall resist that law, and have no proclivity whatsoever to extinction in its blaze, to death in its life, to weariness in its effort, and shall be replenished and not exhausted by expenditure. 'They that wait upon the Lord shall renew their strength,' and, in all forms of motion possible to a creature they shall expatiate and never tire. So let us look on this blessed possibility a little more closely. Note, then, how to get at it. 'They that wait upon the Lord' is Old Testament dialect for what in New Testament phraseology is meant by 'Believe on the Lord Jesus Christ.' For the notion expressed here by 'waiting' is that of expectant dependence, and the New Testament 'faith' is the very same in its attitude of expectant dependence, while the object of the Old Testament 'waiting,' Jehovah, is identical with the object of the New Testament faith, which fastens on God manifest in the flesh, the Man Jesus Christ.