ALL the gifts work by faith. Wherever you see a person walking in their gift, they are doing it according to the measure of faith that allows them to do that. Teachers teach to the extent their faith to minister in their calling and gifting gives them the confidence and assurance to do that. People who are hospitable do that to the extent their faith in God's calling and gifting gives them the confidence and assurance to do that. Evangelists preach the gospel to the extent their faith in their gifting and calling gives them the confidence and assurance..and so on.
I'm convinced that the person who has the 'gift' of faith...prays. People with the gift of faith are eager to seek God in prayer because they have very strong faith that God hears and answers the needs of his people. They believe God can do things, so they petition him in prayer for that which they know he can do. And they ask in the boldness of faith--the exact prerequisite for answered prayer (the main one anyway).
And they are the most humble of people. You won't catch them bragging about their gift. You'll have to start searching out-of-the-way prayer closets to find out who has this gift of faith that usually works in secret on behalf of the people of God. They love and care deeply for the needs of the people of God and they minister very privately but earnestly in great faith before God on the behalf of others. I'd be shocked if someone came forward and said, "I have that gift". They and God know it, and that's good enough for them.
I have just one question then if it is as you post, Do these of
Matt. 7 not fit in with your posting??
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21] Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven.
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22] Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
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23] And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
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24] Therefore whosoever heareth these sayings of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock:
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25] And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock.
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26] And every one that heareth these sayings of mine, and doeth them not, shall be likened unto a foolish man, which built his house upon the sand:
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27] And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell: and great was the fall of it.
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28] And it came to pass, when Jesus had ended these sayings, the people were astonished at his doctrine:
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29] For he taught them as one having authority, and not as the scribes.
--Elijah