6 Let those who make profession of the evangelical counsels seek and love above all else God who has first loved us (cf. 1 John 4:10) and let them strive to foster in all circumstances a life hidden with Christ in God (cf. Col. 3:3). This love of God both excites and energizes that love of one's neighbor which contributes to the salvation of the world and the building up of the Church. This love, in addition, quickens and directs the actual practice of the evangelical counsels. Drawing therefore upon the authentic sources of Christian spirituality, members of religious communities should resolutely cultivate both the spirit and practice of prayer. In the first place they should have recourse daily to the Holy Scriptures in order that, by reading and meditating on Holy Writ, they may learn "the surpassing worth of knowing Jesus Christ" (Phil. 3:8). They should celebrate the sacred liturgy, especially the holy sacrifice of the Mass, with both lips and heart as the Church desires and so nourish their spiritual life from this richest of sources. So refreshed at the table of divine law and the sacred altar of God, they will love Christ's members as brothers, honor and love their pastors as sons should do, and living and thinking ever more in union with the Church, dedicate themselves wholly to its mission.
Source: Perfectae Caritatis (Vatican.va)