Council of Trent (1545 to 1563)The Council Of Trent included the most significant development of Eucharistic theological doctrine since the apostolic age. Its work became the foundation for Eucharistic dogmatic and devotional progress ever since.
On October 11th 1551 Pope Julius III approved the conciliar statements of the thirteenth session of the Council saying in Chapter V of his declaration: "There is, therefore, no room for doubt that all the faithful of Christ may, in accordance with a custom always received in the Catholic Church, give to this most holy sacrament in veneration the worship of latria, which is due to the true God. Neither is it to be less adored for the reason that it was instituted by Christ the Lord in order to be received. For we believe that in it the same God is present of whom the eternal Father, when introducing Him into the world, says: And let all the angels of God adore him; whom the Magi, falling down, adored; who, finally, as the Scriptures testify, was adored by the Apostles in Galilee."
Canon 6 of the Council specifically states that we need to worship and adore the Eucharist and that if anyone says otherwise they are in error: "If anyone says that in the holy sacrament of the Eucharist, Christ, the only begotten Son of God, is not to be adored with the worship of latria, also outwardly manifested, and is consequently neither to be venerated with a special festive solemnity, nor to be solemnly borne about in procession according to the laudable and universal rite and custom of holy Church, or is not to be set publicly before the people to be adored and that the adorers thereof are idolaters, let him be anathema."
The Catechism of Trent (the Fourth Petition of the Lord's Prayer) - "The Eucharist is called our bread, because it is the food of the faithful only, that is to say, of those who, uniting charity to faith, wash away the defilement of their sins in the Sacrament of Penance, and mindful that they are the children of God, receive and adore this divine Sacrament with all possible holiness and veneration."
Second Vatican Council (1962 to 1965)Dec. 4, 1963 - Vatican II's Constitution On The Sacred Liturgy (Sacrosanctum Concilium)
(Source: Vatican website – www.vatican.va)
"(12) The spiritual life, however, is not limited solely to participation in the liturgy. The Christian is indeed called to pray with his brethren, but he must also enter into his chamber to pray to the Father in secret; yet more, according to the teaching of the Apostle, he should pray without ceasing...(13) Popular devotions of the Christian people are to be highly commended, provided they accord with the laws and norms of the Church, above all when they are ordered by the Apostolic See."
Dec. 7, 1965 - Vatican II's Decree On The Ministry And Life Of Priests (Presbyterorum Ordinis)
(Source: Vatican website – www.vatican.va)
"(18)...As a help towards faithful fulfillment of their ministry, priests should love to talk daily with Christ, the Lord, in their visit to the most Blessed Sacrament, and in their personal devotion to it... By this spirit they themselves, and with them the people entrusted in their care, will unite themselves with Christ, the Mediator of the New Testament, and be able to, as adopted sons, cry ‘Abba! Father!’" (Rom 8:15)."
