Lumen Gentium

10. Christ the Lord, High Priest taken from among men,(100) made the new people "a kingdom and priests to God the Father".(101) The baptized, by regeneration and the anointing of the Holy Spirit, are consecrated as a spiritual house and a holy priesthood, in order that through all those works which are those of the Christian man they may offer spiritual sacrifices and proclaim the power of Him who has called them out of darkness into His marvelous light.(102) Therefore all the disciples of Christ, persevering in prayer and praising God,(103) should present themselves as a living sacrifice, holy and pleasing to God.(104) Everywhere on earth they must bear witness to Christ and give an answer to those who seek an account of that hope of eternal life which is in them.(105)

Though they differ from one another in essence and not only in degree, the common priesthood of the faithful and the ministerial or hierarchical priesthood are nonetheless interrelated: each of them in its own special way is a participation in the one priesthood of Christ.(2*) The ministerial priest, by the sacred power he enjoys, teaches and rules the priestly people; acting in the person of Christ, he makes present the eucharistic sacrifice, and offers it to God in the name of all the people. But the faithful, in virtue of their royal priesthood, join in the offering of the Eucharist.(3*) They likewise exercise that priesthood in receiving the sacraments, in prayer and thanksgiving, in the witness of a holy life, and by self-denial and active charity.

Lumen Gentium

10. Christus Dominus, Pontifex ex hominibus assumptus (cf. Hebr. 5, 1,5) novum populum «fecit ... regnum, et sacerdotes Deo et Patri suo» (Apoc. 1, 6; cf. 5, 9-10). Baptizati enim, per regenerationem et Spiritus Sancti unctionem consecrantur in domum spiritualem et sacerdotium sanctum, ut per omnia opera hominis christiani spirituales offerant hostias, et virtutes annuntient Eius qui de tenebris eos vocavit in admirabile lumen suum (cf. I Pt. 2, 4-10). Ideo universi discipuli Christi, in oratione perseverantes et collaudantes Deum (cf. Act. 2, 42-47), seipsos hostiam viventem, sanctam, Deo placentem exhibeant (cf. Rom. 12, 1), ubique terrarum de Christo testimonium perhibeant, atque poscentibus rationem reddant de ea, quae in eis est, spe vitae aeternae (cf. I Pt. 3, 15).

Sacerdotium autem commune fidelium et sacerdotium ministeriale seu hierarchicum, licet essentia et non gradu tantum differant, ad invicem tamen ordinantur; unum enim et alterum suo peculiari modo de uno Christi sacerdotio participant.[16] Sacerdos quidem ministerialis, potestate sacra qua gaudet, populum sacerdotalem efformat ac regit, sacrificium eucharisticum in persona Christi conficit illudque nomine totius populi Deo offert; fideles vero, vi regalis sui sacerdotii, in [15] oblationem Eucharistiae concurrunt,[17] illudque in sacramentis suscipiendis, in oratione et gratiarum actione, testimonio vitae sanctae, abnegatione et actuosa caritate exercent.