In Proposition 11, George Peters states:
“The mysteries of the kingdom were given to the apostles.”
Peters avers that such a proposition is derived from passages such as Mark 4:11 and Matthew 13:11 which state “To you has been given the secret of the kingdom of God, but for those outside everything is in parables,” and ““To you it has been given to know the secrets of the kingdom of heaven, but to them it has not been given” respectively. This does not mean that only the apostles were given the ability to understand the doctrine or the theological intricacies of the kingdom. If that were true, it would of course be of no purpose to study such a doctrine or for Peters to spend what I am sure was a great deal of time writing a three volume opus on the subject. What it does mean is due to their intimate interaction with the Redeemer and the purpose given them to fulfill by God through the work of the Holy Spirit, they were provided by inspiration truths to be written down for our benefit. These truths are found in Scripture and are concepts foreign to the wicked but for the righteous, they are a fount of life giving water.
The most notable observation Peters presents in Proposition 11 is the following:
“While some mystery, some unexplained or unrevealed things pertaining to the kingdom, may have existed in the days of the apostles and now remain such, not given by Jesus or the Spirit, yet the assurance is abundantly ours, that the kingdom itself, its nature, our relation to it, all things necessary for a correct understanding of its meaning, was made known. This is evident, e.g. from its having been predicted, taught to the disciples and preached by them to the people; the apostles and their immediate followers professing themselves called to proclaim it so that men might be induced to enter, receive, and inherit it. All this, in the nature of the case, presupposes a correct understanding of it. The kingdom is the great prize, reward, etc., held up before them, and it is most reasonable and conformable to fact to believe that they would have such an adequate knowledge of its real import as to be able to tells us what it denotes. Admitting mystery even now attached to things relating to the kingdom, we can know these so far as declared, for while “the secret things belong unto the Lord our God; those things which are revealed belong unto us and to our children forever” (Deut. 29:19)
What Peters is noting in this observation is that God reveals to His children that which He desires for us to know at that particular time in salvation history. Certainly not all of the mysteries of the kingdom were revealed to the apostles. With that said, as noted by Peters, what they taught, preached, declared, and wrote down was correct in all aspects whether they or those who originally read or heard their teachings fully understood the entirety of the mysteries of the kingdom at that time. Even today there are elements of the mystery of the kingdom that remain to be revealed and will be all in God’s perfect timing. As Paul aptly noted in 1 Corinthians 13:12, “For now we see in a mirror dimly, but then face to face. Now I know in part; then I shall know fully, even as I have been fully known.”