I'll hope that you care to understand what I have to say and proceed.
The Communion of the Saints is completely Scriptural. (Verses soon to follow. I am at the BMV helping my little brother and his friend get their permits).
However the practice of praying to the saints in Heaven is not found in Scripture. The connection between those in Christ who are Triumphant in Heaven and Militant on Earth is in fact Scriptural. The saints in Heaven are both aware of our struggles here on Earth and eagered to see the completed work of God's plan.
Please allot me about 45 min to get home and provide the verses that I believe support my position.
Thanks for waiting.
First off I'll use
1 Corinthians 12:12For as the body is one, and hath many members, and all the members of that one body, being many, are one body: so also is Christ.
13For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
14For the body is not one member, but many.
15If the foot shall say, Because I am not the hand, I am not of the body; is it therefore not of the body?
16And if the ear shall say, Because I am not the eye, I am not of the body; is it therefore not of the body?
17If the whole body were an eye, where were the hearing? If the whole were hearing, where were the smelling?
18But now hath God set the members every one of them in the body, as it hath pleased him.
19And if they were all one member, where were the body?
20But now are they many members, yet but one body.
21And the eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you.
22Nay, much more those members of the body, which seem to be more feeble, are necessary:
23And those members of the body, which we think to be less honourable, upon these we bestow more abundant honour; and our uncomely parts have more abundant comeliness.
24For our comely parts have no need: but God hath tempered the body together, having given more abundant honour to that part which lacked.
25That there should be no schism in the body; but that the members should have the same care one for another.
26And whether one member suffer, all the members suffer with it; or one member be honoured, all the members rejoice with it.
27Now ye are the body of Christ, and members in particular.
28And God hath set some in the church, first apostles, secondarily prophets, thirdly teachers, after that miracles, then gifts of healings, helps, governments, diversities of tongues.
29Are all apostles? are all prophets? are all teachers? are all workers of miracles?
30Have all the gifts of healing? do all speak with tongues? do all interpret?
31But covet earnestly the best gifts: and yet shew I unto you a more excellent way.