requirement to take care of communion

AAL-E-IMRAN (THE FAMILY OF 'IMRAN, THE HOUSE OF 'IMRAN) : 100-109

3:100. O ye who believe! If ye listen to a faction among the People of the Book, they would (indeed) render you apostates after ye have believed!

3:101. And how would ye deny Faith while unto you are rehearsed the Signs of Allah, and among you Lives the Messenger? Whoever holds firmly to Allah will be shown a way that is straight.
3:102. O ye who believe! Fear Allah as He should be feared, and die not except in a state of Islam.
3:103. And hold fast, all together, by the rope which Allah (stretches out for you), and be not divided among yourselves; and remember with gratitude Allah's favour on you; for ye were enemies and He joined your hearts in love, so that by His Grace, ye became brethren; and ye were on the brink of the pit of Fire, and He saved you from it. Thus doth Allah make His Signs clear to you: That ye may be guided.

3:104. Let there arise out of you a band of people inviting to all that is good, enjoining what is right, and forbidding what is wrong: They are the ones to attain felicity.
3:105. Be not like those who are divided amongst themselves and fall into disputations after receiving Clear Signs: For them is a dreadful penalty,-
3:106. On the Day when some faces will be (lit up with) white, and some faces will be (in the gloom of) black: To those whose faces will be black, (will be said): "Did ye reject Faith after accepting it? Taste then the penalty for rejecting Faith."

3:107. But those whose faces will be (lit with) white,- they will be in (the light of) Allah's mercy: therein to dwell (for ever).
3:108. These are the Signs of Allah: We rehearse them to thee in Truth: And Allah means no injustice to any of His creatures.
3:109. To Allah belongs all that is in the heavens and on earth: To Him do all questions go back (for decision).