The knowledge of Christ is a lesson in which we cannot be perfected till we behold Him as He is, but yet through it from the first we receive the earnest and pledge of all that is meant by life and godliness, and the culture of the Divine gifts will yield a rich increase of the same knowledge. _For if these things are yours and abound, they make you to be not idle nor unfruitful unto the knowledge of our Lord Jesus Christ._ Men in this life can draw nearer unto this full knowledge, and the bliss of each new gain prompts to more zealous exertion. There can be no relaxation of effort, no remissness, in such a quest. For hope is fostered by the constant experience of a deepening knowledge, and receives continual pledges that the glory to be revealed is far above what is already known. The enlightened vision grows wider and ampler; and the path, which began in faith, shineth more and more unto the perfect day. The world offers other lights to its votaries, but they lead only into darkness. _For he that lacketh these things is blind, seeing only what is near, having forgotten the cleansing from his old sins._ He who has taken no heed to foster within him the light which is kindled by faith, and which can only be kept alive by the grace of the Divine Spirit, is blind, yea blind indeed, for he is self-blinded. He has quenched the inward light which was of God's free gift, and made the light within him to be darkness, a darkness, like Egypt's, which may be felt. Such a man has no insight into the glories of the celestial vision, no joy of the widening prospect which captivates the gaze of the spiritual man. He can see only things close at hand, and is as one bowed downward to the earth, groping a dreary way, with neither hope nor exaltation at the end. For he has forgotten--nay, St. Peter's words are stronger and very striking--λήθην λαβὼν--he has taken hold upon forgetfulness, made a deliberate choice of that course which obliterates all remembrance of God's initial gift of grace to cleanse him from his old sins. Unmindful of this purification, he has admitted into the dwelling where the Spirit of God would have made a home other spirits more wicked than those first cast out. They have entered in, and dwell there. There is a marked contrast between this expression and the word used for God's gift of faith (ver. 1). That a man receives (λαχὼν) as the bounty of his Lord's love; and if treasured and used, it proves itself the light of life for this world and the next. The wrong path he chooses for himself (λαβὼν), and its close is the blackness of the dark.
_Wherefore, brethren, give the more diligence to make your calling and election sure._ "Wherefore, brethren"--because such terrible blindness as this has fallen upon some, who left their first grace unimproved and allowed even the memory of it to fade away--do you give the more diligence in your religious life. The true way to banish evil is to multiply good, leaving neither room nor time for bad things to spread themselves. When the peril of such things is round about you, it is no time for relaxed effort. Your enemy never relaxes his. He is always active, seeking whom he may devour, and employs not the day only, but the night, when men sleep, to sow his tares. Let him find you ever watchful, ever diligent to hold fast and make abundant the gifts which God has already bestowed upon you. In the foreknowledge of the Father, you are elect from the foundation of the world; and your call is attested by the injunction laid upon you, "Ye shall be holy, for I am holy." Your inheritance is in store where nothing can assail it. God only asks that you should manifest a wish, a longing, for His blessings; and He will pour them richly upon you. He has made you of a loftier mould than the inanimate and irrational creation. The flower turns to the sun by a law which it cannot resist. From the Sun of righteousness men can turn away. But the Father's will is that your eyes should be set on the hope which He offers. Then of a certainty it will be realised. Lift up your eyes to the eternal hills, for from thence your help will come. The promise is sure. Strive to keep your hope equally steadfast. For now you belong to the household of Christ; now you are through Him children of the heavenly Father: to this sonship you are elect and have been called, and to it you shall attain if you hold fast your boldness and the glorying of your hope unto the end.