en_tn_lite_do_not_use/mat/13/52.md

has become a disciple to the kingdom of heaven

"has learned the truth about God in heaven, who is king" or "has submitted himself to God's rule"

is like a man who is the owner of a house, who draws out old and new things from his treasure

Jesus compares scribes, who know very well the scriptures that Moses and the prophets wrote, and who also now accept Jesus's teachings, to a house owner who uses both old and new treasures.