יְ֭רֵאֶיךָ יִרְא֣וּנִי וְיִשְׂמָ֑חוּ כִּ֖י לִדְבָרְךָ֣ יִחָֽלְתִּי׃
주를 경외하는 자가 나를 보고 기뻐할 것은 내가 주의 말씀을 바라는 연고니이다
Ein Yaakov (Glick Edition)
R. Juda, in the name of Rab said: "The Torah endured with the Judeans. who paid strict attention to the exact language which they received from their teacher; but with the Galileans, who paid no attention to the exact language as they received it from their teacher, the Torah did not endure." Does this depend upon paying strict attention to the exact language? It means that because the Judeans quoted the exact words of their teachers, they were enabled to make signs and marks on every law, and thus preserve it. The Galileans, however, who did not quote the exact language of their teachers, were unable to place signs on the laws and consequently forgot them. If you please, you may say that the Judeans studied from one teacher and therefore remembered what they learned; but the Galileans had many teachers and consequently did not retain anything. Rabina said: "The Judeans studied the treatise [with others, after they knew it themselves], and therefore they retained them. But the Galileans did not study the treatise with others, and in consequence, forgot it; David [the King] studied with others, but Saul did not study with others. Of David, who studied with others, it is written (Ps. 119, 74.) Those that fear Thee will see me and be rejoiced. But of Saul, who did not teach others, it is written (I Sam. 14, 47.) And wheresoever he turned himself, he caused terror." (Ib. b) R. Jochanan said further: "Whence do we know that the Holy One, praised be He! forgave Saul [for the sin of killing the priests of Nob]? It is said (I Sam. 28, 19.) And to-morrow shall thou and thy sons be with me, i.e., with me in the same abode."
Midrash Tehillim
"They shall see and rejoice, those who fear You, etc. When do the people of Israel rejoice? When they see their king or president engaging in Torah study. As it is written (Psalms 35:27), 'Those who desire my vindication shall shout for joy and be glad.' And what is written afterwards (Psalms 35:28), 'My tongue shall speak of Your righteousness, and of Your praise all day long.' Therefore, as long as the king is engaged in Torah study, the people of Israel are happy. Therefore it is said, 'They shall see and rejoice, those who fear You, etc.'"