Yeshua tells His Apostles in John 15:27 –
"And you also will bear witness, because you have been with Me from the beginning." - John 15:27
He is clear to make the distinction who is qualified to be His apostle. Peter realizes this also when it comes time to replace Judas Iscariot, for Peter also makes the distinction in Acts 1:21, 22 –
21 “Therefore, of these men who have accompanied us all the time that the Lord Jesus went in and out among us, 22 beginning from the baptism of John to that day when He was taken up from us, one of these must become a witness with us of His resurrection.”
The criteria for being an apostle of the Lamb is clear, as set forth by the Messiah and confirmed by Peter. Those two witnesses should be enough for us but Yeshua goes even further and gives us yet another confirmation 20+ years after Saul of Tarsus is dead. Revelation was given to John 20+ years after the death of Saul. In Revelation 21:14, Yeshua confirms:

Do we think that Yeshua was unaware of what went on after He ascended back up to the right hand of the Father? Of course He knew/knows, but He always allows us to be tested. Who will follow Him? Who will love YHVH with all their heart, all their soul and with all their might, as He did by His obedience? Very few.
We are being tested. Who will you follow?

Shalom, b’shem Yeshua ha’Mashiach. 💕