He shall enter into peace: they shall rest in their beds, each one walking in his uprightness. He shalt enter into peace "He shall go in peace" - יבוא שלום yabo shalom; the expression is elliptical, such as the prophet frequently uses. The same sense is expressed at large and in full terms, Genesis 15:15 : ואתה תבא אל אבותיך בשלום veattah libbo al abotheycha beshalom, "and thou shalt go to thy fathers in peace."
They shall rest in their beds, each one walking in his uprightness "He shall rest in his bed; even the perfect man" - This obscure sentence is reduced to a perfectly good sense, and easy construction by an ingenious remark of Dr. Durell. He reads ינוח על משכבו תם yanuach al mishcabo tam, "the perfect man shall rest in his bed." Two MSS. (one of them ancient) have ינוח yanuach, singular; and so the Vulgate renders it, requiescat, "he shall rest." The verb was probably altered to make it plural, and so consistent with what follows after the mistake had been made in the following words, by uniting משכבו mishcabo and תם tam into one word. See Merrick's Annotations on the Psalms, Addenda; where the reader will find that J. S. Moerlius, by the same sort of correction, and by rescuing the adjective תם tam, which had been swallowed up in another word in the same manner, has restored to a clear sense a passage before absolutely unintelligible: -
למו חרצבות אין כי lemo chartsubboth ein ki :אולם ובריא תם ulam ubari tham
"For no distresses happen to them;
Perfect and firm is their strength."