These teachings were not meant solely for that particular time or for specific individuals; rather, they are intended as a law and guide for all believers, as they are grounded in the eternal principles of Divine holiness and the moral truths established by the Creator within human nature.
The chosen ones had little prior instruction, having spent some time only with disciples of John, like Andrew and John. The Lord selected those who demonstrated their love for Him, trusting like children and free from the contamination of misguided enlightenment. He imparted their education through both word and action, whether in solitude or before the multitudes, in homes or on the roads, on land and at sea. He clarified what remained obscure to others, allowing them to witness His life and works. He gradually dismantled the biases they had absorbed from Jewish teachings, utilizing their mistakes as learning opportunities. He encouraged them to discuss subjects familiar to them, without disregarding the fact that He was aware not only of their conversations but also of the innermost thoughts of individuals. He guided their emotional responses, aligning them with their responsibilities.
In essence, He purified and illuminated their minds and hearts, preparing them for a profound outpouring of the Spirit of truth and sanctification. Initially, they related to the Lord as His disciples, but by the conclusion of His earthly ministry, He referred to them as His friends (Jn. 15:14-15), for He shared all with them; ultimately, He called them brothers.