And when Jesus saw that he answered discreetly, he said unto him, Thou art not far from the kingdom of God. And no man after that durst ask him [any question].
Note 5 at Mr 12:34: Jesus saw that this lawyer answered Him with understanding and that he had the understanding necessary for salvation. He was close, but he wasn't there yet. He had to do more than just know the truth; he had to act on it (Jas 2:17-20). The Scriptures don't tell us if this lawyer went on to act on this knowledge and actually enter into the kingdom of God.