Of course, the apostles did not have the New Testament.
Of course, the ENTIRE New Testament was written and circulated BEFORE the last Apostle died.
They also walked with Christ for 3 years and heard all His teaching, received the Spirit on Pentecost, interacted with the written Christ and were themselves inspired in both their messages and writings.
You would have to make the argument that no one had the NT for almost 400 years!
The Roman Catholic Church made dogmatic definition upon its Biblical canon in 382 at the Council of Rome. The Orthodox, recognized their canon writings as authoritative at the Second Council of Trullan of 692.
The Apostle's did not have this problem at all.
Should be the Risen Christ.
Well, that's a failed argument if ever I saw one.
They LIVED the NT and wrote it.
True.
All of it anyway; for they were in the process of writing it.
When this letter is read among you, have it also read in the church of the Laodiceans; and you, for your part read my letter that is coming from Laodicea.
Say to Archippus, Take heed to the ministry which you have received in the Lord, that you may fulfill it..
Colossians 4:16-18 NASB