And this kingdom of God's priests has its duty to the world as well as unto God. Israel in time past was chosen to be God's witness to the rest of mankind, so that when men saw that no nation had God so nigh unto them as Jehovah was whenever Israel called upon Him, that no nation had statutes and judgements so righteous as all the Law which had been given from Sinai, they might be constrained to say, "Surely this great nation is a wise and understanding people," and might themselves be won to the service of a God so present and so holy. And now each member of the Christian body, while offering himself a living sacrifice to God, while delighting to do His will, while treasuring His law, is to exercise himself in wider duties, that God's glory may be displayed unto all men. One of the psalmists, whose words have been in part referred to Christ Himself, testifies how this priesthood for mankind should be fulfilled: "I have published righteousness in the great congregation; lo, I will not refrain my lips, O Lord, Thou knowest. I have not hid Thy righteousness within my heart; I have declared Thy faithfulness and Thy salvation; I have not concealed Thy loving-kindness and Thy truth from the great congregation" (Psalm xl. 9, 10). These were the excellencies which the Psalmist had found in God's service, and his heart ran over with desire to impart the knowledge unto others. With juster reason shall Christ's servants be prompted to a like evangel. They cannot hold their peace, specially while they consider how great blessings those lose who as yet own no allegiance to their Master. _That ye may show forth the excellencies of Him who called you out of darkness into His marvellous light._ This theme fills the rest of the letter. The Apostle teaches that in every condition this duty has its place and its opportunities. Subjects may fulfil it, as they yield obedience to their rulers, servants in the midst of service to their masters, wives and husbands in their family life, each individual in the society where his lot is cast, and specially those who preside over the Christian congregations. Wherever the goodness of God's mercy has been tasted, there should be hearts full of thanksgiving, voices tuned to the praise of Him who has done great things for them. Lives led with this aim will make men to be truly what God designs: a holy nation; a kingdom of priests. And ever as men walk thus will the kingdom for which we daily pray be brought nearer.