The word apostle means “sent one.” It does not mean “the one with authority to govern over your faith.” 

In one sense of the word, anyone who is sent by God is apostolic for those to whom they are sent. Missionaries sent by God are apostles to those to whom they are sent. This does not mean they are apostles to all people or all Christians. It does not mean they are apostles in the same class as the original apostles.

The truth is, many who are apostles would never refer to themselves as such, because they are not desirous of titles, their joy is fulfilled in Christ, and in spreading the gospel and helping those to whom they are sent become established in Christ.

Those who think apostleship is about governing over other believers, and claim apostleship in this regard, have motives you will not find in one truly called to be an apostle.

In scripture, the original apostles (the 12 ordained by Jesus, including Matthias ~Acts 1:15-26) were ordained as eyewitnesses of Jesus’s resurrection. These original apostles along with the prophets who testified beforehand of Christ, gave us the foundation upon which the church is built: Jesus Christ who is himself the chief cornerstone .

The witness of the prophets who testified of Christ who was to come, and the witness of the apostles who walked with Christ give us the foundation upon which our faith rests. We build on the foundation of their witness and testimony of Christ.

In John 17 Jesus prayed for his original apostles and those who would believe in him through their word.  In Revelation, we can see the connection between the calling and ministry of the original apostles and the foundation of the city of God!

And the wall of the city had twelve foundations, and in them the names of the twelve apostles of the Lamb. ~ Revelation 21:14

The ministry of the original apostles are the New Testament counterpart to the ministry of the Old Testament prophets. The prophets bore witness before Christ came, the apostles bore witness to his having come in the flesh. 

Peter declares, This second epistle, beloved, I now write unto you; in both which I stir up your pure minds by way of remembrance: That ye may be mindful of the words which were spoken before by the holy prophets, and of the commandment of us the apostles of the Lord and Saviour… ~ 2 Peter 3:1-2

Notice how Peter closely connects the ministry of the prophets before Christ, and the apostles of Christ.