Because, Sckcd, We are the Body of Christ the Church which he instiututed when he returned to the Father and sent the Holy Spirit to guide it into all truth.
The Catholic Church is the Bride of Christ. The Church is his Body he is the Head. When the Holy Spirit was sent He breathed His Breath into the Apostles and sent them forth to teach all men the truth.H e has done what the Father wanted down through the ages through his Church and he will continue to draw all men into truth until the end of time.

:thumbsup:Carlan
Total misrepresentation of what the Scriptures say.
John 16:13 But when he, the Spirit of truth, comes, he will guide
you into all truth. He will not speak on his own; he will speak only what he hears, and he will tell
you what is yet to come.
Jesus promised the Spirit would come and guide the Apostles into all truth. By the time the Apostles died, all truth required for us to obtain salvation and live godly lives was revealed. As Paul also points out to Timothy:
2 Timothy 3:14-17 But as for you, continue in what you have learned and have become convinced of, because you know those from whom you learned it, and how from infancy you have known* the holy Scriptures, which are able to make you wise for salvation through faith in Christ Jesus*. All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the man of God may be
thoroughly equipped for every good work.
Irenaeus even attests to the fact that the Apostles had perfect knowledge before they preached, and no one should presume to add to this teaching.
Against Heresies 3.1.1
*
We have learned from none others the plan of our salvation, than from those through whom the Gospel has come down to us, which they did at one time proclaim in public, and, at a later period, by the will of God, handed down to us in the Scriptures, to be the ground and pillar of our faith*
Ouch! According to Irenaeus, everything that was preached in public was set down in writing, and is all we need for our plan of salvation. Double ouch!
Cont’d
For it is unlawful to assert that they preached before they possessed “perfect knowledge,” as some do even venture to say, boasting themselves as improvers of the apostles.
These quotes are quite damaging to the Catholic position that the Apostles teaching needs to be constantly explained, added to, and, I might add, mingled with pagan philosophy to somehow make it more clear.
So, not only is the Scripture plain when all truth would be revealed, but Irenaeus said the exact same thing.