6 Bible Verses about Accreditation

If then you consider me to be a partner [in the faith], welcome him [back] as [you would] me.

Now as people were anticipating [what would happen] and everyone was wondering in their hearts if perhaps John were the Christ [i.e., God's specially chosen one], John answered [their concerns] by saying to all of them, "I am [the one] immersing you in water, but One who is more powerful than I will follow my [ministry]. I am not [even] worthy to loosen the straps of His sandals. He will immerse you people with the Holy Spirit and with fire [i.e., the punishment of hell. See Matt. 3:10-12]. His separating shovel is in His hand and He will completely clear off His threshing floor [i.e., by removing all of the husks]. And He will gather the wheat into His barn, but will burn up the husks with a fire that will never go out."

And He replied to them, "No doubt you will tell me this proverb, 'Doctor, heal yourself,' and 'Perform [the miracles] here in your own home town also that we heard you did in Capernaum.'" And He said, "Truly I tell you, no prophet is acceptable in his own home town.

If I testify about myself, my testimony is not [considered] true. [But] there is Someone else [i.e., God] who testifies about me, and I know that the testimony He gives about me is true. "You people have sent to John [the Immerser, for information. See 1:19] and he has given true testimony [about me].read more.
But I do not rely on the testimony of men about me; therefore I tell you these things so you will be saved [i.e., from condemning judgment. See verse 29]. John was the lamp that was burning and glowing and you people were willing to enjoy the light that he projected for awhile. But my testimony is greater than John's. For the deeds the Father has given me to complete, the very deeds I do, testify about me, that the Father has sent me. And the Father who sent me testifies concerning me. You people have never heard His voice nor seen His form. And you do not keep His message living in your [hearts], for you do not believe [in] the One whom God sent [i.e., in Jesus]. You search through the Scriptures [i.e., the Old Testament], because you think that you will [learn how to] have never ending life by [reading] them. And these Scriptures are what testify concerning me. But you do not want to come to me [i.e., to believe in me. See verse 38] so that you will have [never ending] life.

[This letter is from] Paul, and Silvanus and Timothy, [and is being sent] to the church of the Thessalonians [Note: This was a town in present-day northeastern Greece] in [fellowship with] God, the Father and the Lord Jesus Christ. May God's unearned favor and peace be upon you. We always thank God for all of you, [regularly] mentioning you in our prayers. We continually remember, in the presence of our God and Father, the work produced by your faith, the labor prompted by your love, and your endurance motivated by your hope in our Lord Jesus Christ.read more.
We know, my brothers who are dearly loved by God, about your election [i.e., that you were chosen by God because of your obedient faith], for our Gospel came to you, not merely in words, but also in power, in [a demonstration of] the Holy Spirit [See I Cor. 2:4] and with ["our" or "your"] deep conviction [of its truth]. You people know what kind of men we were while living among you for your benefit. And you became imitators of us and of the Lord. [And even though] you suffered much affliction, you welcomed the message with joy [given to you] by the Holy Spirit, and so became an example to all the believers in Macedonia and Achaia. [Note: These two provinces make up present-day Greece]. For the Lord's message sounded forth from you, not only in Macedonia and Achaia, but your faith toward God [also] spread everywhere [else], so that we do not have to say anything [about you]. For those people themselves report on what kind of a reception we had from you, and how you people turned to God from idols, to serve a living and true God. And [they tell how you are] waiting for His Son [to come] from heaven, the One He raised up from the dead --- this Jesus, who rescues us from the coming wrath [of God].

Instead, we speak as men approved by God to be entrusted with the Gospel. So, we speak, not trying to please people but God, who examines [the motives of] our hearts. For we were never found using flattering words at any time, as you know, nor did we try to cover up any greedy desires. God can testify [to this]. [And] we were not looking for honor from people, either from you or from anyone else, even though, as apostles of Christ, we could have become a burden [to you]. [Note: The idea seems to be that the apostles could have claimed financial support, but chose not to].