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*** it-1 p. 498 Congregation ***
Whereas the Law covenant mediated by Moses and under which the congregation of Israel was regulated was fulfilled by Christ and was taken out of the way by Jehovah God (Mt 5:17; 2Co 3:14; Col 2:13, 14), members of the Christian congregation of God partake of the benefits of the new covenant mediated by the Greater Moses, Jesus Christ. (Mt 26:28; Heb 12:22-24; Ac 3:19-23) Also, while the priests and kings of Israel were anointed with oil (Ex 30:22-30; 2Ki 9:6), those chosen by God to be members of the Christian congregation are anointed with holy spirit (2Co 1:21, 22; 1Jo 2:20) and are adopted by Jehovah God as his sons.—Eph 1:5.
Basically the Hebrew congregation was composed of natural Israelites. Persons comprising the anointed Christian congregation of God are spiritual Israelites, forming the tribes of spiritual Israel. (Re 7:4-8)
*** it-2 p. 270 Lord’s Evening Meal ***
In thus partaking, these indicate that they are in the new covenant and are receiving the benefits of it, that is, God’s forgiveness of sins through Christ’s blood. They properly esteem the value of “the blood of the covenant” by which they are sanctified. (Heb 10:29) The Scriptures call them “ministers of a new covenant,” serving its ends. (2Co 3:5, 6) And they fittingly partake of the emblematic loaf because they can say: “By the said ‘will’ we have been sanctified through the offering of the body of Jesus Christ once for all time.” (Heb 10:10) They share in Christ’s sufferings and in a death like his, a death of integrity. They hope to share in “the likeness of his resurrection,” a resurrection to immortal life in a spiritual body.—Ro 6:3-5.
*** w12 3/1 p. 17 How Should We Remember Jesus’ Death? ***
Through the new covenant, Jehovah makes blessings available to many by means of a few. Those in the covenant are few, a mere 144,000. Through them, millions from all nations will be blessed with everlasting life in an earthly paradise. Some who are in the new covenant serve Jehovah on earth today. They alone properly partake of the bread and the wine because the cup “means the new covenant.”—Read Luke 12:32; Revelation 14:1, 3.
*** w10 3/15 p. 27 One Flock, One Shepherd ***Who Should Partake?
15 Those in the new covenant “have boldness for the way of entry into the holy place.” (Read Hebrews 10:15-20.) These are the ones who are “to receive a kingdom that cannot be shaken.” (Heb. 12:28) So, then, only those who will be kings and priests in heaven with Jesus Christ should drink from the “cup” that represents the new covenant. These participants in the new covenant are the ones promised in marriage to the Lamb. (2 Cor. 11:2; Rev. 21:2, 9) All others who attend the annual Memorial are respectful observers, who do not partake of the emblems.
*** w09 1/15 p. 28 par. 15 Jehovah’s Servant—“Pierced for Our Transgression” ***
The things in the heavens” that are reconciled to Jehovah by means of Christ’s shed blood are the anointed Christians, called to reign with Christ in the heavens. Christians who are “partakers of the heavenly calling” are declared “righteous for life.” (Heb. 3:1; Rom. 5:1, 18) Jehovah then begets them as spiritual sons. The holy spirit bears witness to them that they are “joint heirs with Christ,” called to become kings and priests in his heavenly Kingdom. (Rom. 8:15-17; Rev. 5:9, 10) They become part of spiritual Israel, “the Israel of God,” and they are taken into the “new covenant.” (Jer. 31:31-34; Gal. 6:16) As members of the new covenant, they are entitled to partake of the Memorial emblems, including the cup of red wine, of which Jesus stated: “This cup means the new covenant by virtue of my blood, which is to be poured out in your behalf.”—Luke 22:20.
*** bh p. 207 par. 4 The Lord’s Evening Meal—An Observance That Honors God ***
Who should partake of these Memorial emblems? Logically, only those in the new covenant—that is, those who have the hope of going to heaven—should partake of the bread and the wine. God’s holy spirit convinces such ones that they have been selected to be heavenly kings. (Romans 8:16) They are also in the Kingdom covenant with Jesus.—Luke 22:29.