Again, a Christian life is like the going forth of the sun, inasmuch as it is a progress involving _a mighty power_. The text speaks of the sun going forth in his _might_. The psalmist also describes him, "rejoicing as a strong man to run a race." The apparent motion of the sun daily through the heavens, suggests the idea of almighty power. As if conscious of his strength, he strides like a giant across the sky. So is the Christian's progress in a holy life one which involves an outlay of exhaustless energies. He lives through the power of God. His going forth is in the might of the Spirit which upholds him. When the apostle speaks of "the exceeding greatness of his power to us-ward who believe, according to the working of his mighty power, which he wrought in Christ when he raised him from the dead;" when he talks of "striving according to his working, which worketh in me mightily;" when he, in Ephesians, attributes his call to the ministry to the effectual working of the power of the grace of God; and when he ascribes glory in the church by Jesus Christ throughout all ages, "unto him that is able to do exceeding abundantly above all that we can ask or think, according to the power _that worketh in us_;" when too the apostle John tells believers that "greater is He that is in you than he that is in the world," do you not perceive that the very sun going forth in his might through the mid-heavens is a spectacle of omnipotence no grander or more sublime than a poor Christian going forth from earth to heaven? The necessity of this mighty interposition of the divine Spirit arises from the helplessness to which sin has reduced us, and the obstacles to a holy life which beset the Christian. This power of the Holy Ghost dwells in the believer; first renewing or regenerating him, and then sustaining him. It operates upon his own faculties in such a way that they are called out in earnest effort. Without this power given to us, who of us could stand? We "wrestle not against flesh and blood, but against principalities, against powers, against spiritual wickedness in high places." There is no greater mistake you can fall into than to conceive that a Christian life is a task of feebleness and imbecility. If you would go forth at all, you must advance with a perseverance which never despairs, a vigilance which never slumbers, and a courage which never quails. If you would call yourself a Christian, you must run like the athlete and struggle like the wrestler; for the believer's course is a powerful movement, like the going forth of the sun in his might.