Proclaim (1804) (exaggello from ek = out + aggéllo = messenger...who speaks and acts in place of one who has sent him) describes a complete proclamation, for as Vines says those verbs (like exaggello) which are compounded with ek often suggest what is to be done fully. Exaggello therefore means to tell forth, to tell something not otherwise known, to make widely know, to report widely, to proclaim throughout and to tell everywhere. Exaggello can even mean "to advertise". Therefore because the world is “in darkness” people do not know the “excellencies” of God; but since we have "Christ in us the hope of glory", they should see Him in and through our attitudes, actions and conversation. Each citizen of heaven is a living “advertisement” for the excellencies or virtues of God and the promises and blessings He bestows on believers now and throughout eternity. Our lives should radiate His “marvelous light” which now even indwells us as the Spirit of Christ. The only NT use of exaggello is here in 1 Peter 2:9 but exaggello is used 10 times in the OT in the LXX (the Septuagint = Greek translation of the Hebrew OT) (Ps 9:14; 56:8; 71:15; 73:28; 79:13; 107:22; 119:13, 26; Prov 12:16). The following examples parallel and amplify Peter's charge to all saints of all ages...(click links to read context of these great verses describing the proclamation of God's excellencies) Ps 9:14 That I may tell (exaggello) of all Thy praises, that in the gates of the daughter of Zion I may rejoice in Thy salvation. (See comments by Spurgeon) Ps 71:15 My mouth shall tell (exaggello) of Thy righteousness, and of Thy salvation all day long; For I do not know the sum of them. (See comments by Spurgeon) Ps 73:28 But as for me, the nearness of God is my good; I have made the Lord God my refuge, that I may tell (exaggello) of all Thy works. (See comments by Spurgeon) Ps 79:13 So we Thy people and the sheep of Thy pasture Will give thanks to Thee forever; To all generations we will tell (exaggello) of Thy praise (See comments by Spurgeon) . Ps 107:22 Let them also offer sacrifices of thanksgiving, And tell (exaggello) of His works with joyful singing. (See comments by Spurgeon) Ps 119:13 With my lips I have told (exaggello) of All the ordinances of Thy mouth. (See comments by Spurgeon) Ps 119:26 I have told of my ways, and Thou hast answered me; Teach me Thy statutes. (See comments by Spurgeon) In this verse Peter clearly leans heavily on OT truths to emphasize the position and privilege of NT believers. Get on your knees and talk to God about men and then go out on your feet and talk to men about the excellencies of God. "Copy and paste the address below into your web browser in order to go to the original page which will allow you to access live links related to the material on this page - these links include Scriptures (which can be read in context), Scripture pop-ups on mouse over, and a variety of related resources such as Bible dictionary articles, commentaries, sermon notes and theological journal articles related to the topic under discussion." http://www.preceptaustin.org/1_peter_29-10.htm#Proclaim