"should" according to YOPIOS. "Doesn't necessarily have to" according to "I believe in...the communion of saints...etc."
AGAIN.......John 14:6 - Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
Do you people even READ your Bible???
"Paul called to be an apostle of Jesus Christ through the will of God, and Sosthenes our brother, Unto the church of God which is at Corinth, to them that are sanctified in Christ Jesus, called to be saints, with all that in every place call upon the name of Jesus Christ our Lord, both their's and our's" -- 1 Corinthians 1:1-2"And the heavens shall praise thy wonders, O LORD: thy faithfulness also in the congregation of the saints." -- Psalm 89:5
As the Westminster Confession of Faith reminds us in Chapter XXVI - Of the Communion of Saints...
I. All saints, that are united to Jesus Christ their Head, by His Spirit, and by faith, have fellowship with Him in His grace, sufferings, death, resurrection, and glory:[1] and, being united to one another in love, they have communion in each other's gifts and graces,[2] and are obliged to the performance of such duties, public and private, as do conduce to their mutual good, both in the inward and outward man.[3]
II. Saints by profession are bound to maintain an holy fellowship and communion in the worship of God, and in performing such other spiritual services as tend to their mutual edification;[4] as also in relieving each other in outward things, according to their several abilities and necessities. Which communion, as God offers opportunity, is to be extended unto all those who, in every place, call upon the name of the Lord Jesus.[5]
III. This communion which the saints have with Christ, does not make them in any wise partakers of the substance of His Godhead; or to be equal with Christ in any respect: either of which to affirm is impious and blasphemous.[6] Nor does their communion one with another, as saints, take away, or infringe the title or propriety which each man has in his goods and possessions.[7]