He shall enter into peace: they shall rest in their beds, each one walking in his uprightness.
He shall enter into peace - in contrast to the persecutions which he suffered in this world (Job 3:13; Job 3:17). The margin, not so well, translates, 'He shall go in peace' (Psalms 37:37; Luke 2:29).
They shall rest in their beds - the calm rest of their bodies in their graves (called "beds," 2 Chronicles 16:14: cf. Isaiah 14:18; because they 'sleep' in them, with the certainty of awaking at the resurrection, 1 Thessalonians 4:14) is the emblem of the eternal "rest" (Hebrews 4:9; Revelation 14:13).
Each one walking in his uprightness. This clause defines the character of those who at death "rest in their beds" - namely, all who walk uprightly.