Let the saints be joyful in glory,.... In the glory put upon them now, being beautified with salvation; in the righteousness of Christ on them, and the grace of Christ in them, which makes them all glorious within; and in the glory they expect to have hereafter, both upon their bodies and souls, and in the hope of that, Ro 5:2.
Some copies of the Ethiopic version render it, "in his glory"; in the glory of Christ, asa divine Person and as Mediator, seen now in the glass of the Gospel, and will be the object of the beautiful vision hereafter; and now is, and then will be, matter of joy unspeakable, 2Co 3:18.
Or "gloriously" , in a glorious manner; as saints do rejoice, when they ascribe all the glory of salvation to the free grace of God and death of Christ, and rejoice on that account; saints have reason to rejoice, and indeed none but they; who being regenerated and sanctified, are meet for and shall partake of eternal glory;let them sing aloud upon their beds; while others are taking their rest and ease, let them meditate on the word of God; commune with their own hearts about their state and condition; remember the Lord, and his goodness to them; all which give an occasion to give thanks unto him, and sing aloud his praise, Ps 63:5; and when they awake on their beds in a morning, after sound sleep and a good repose, it becomes them to praise the Lord, who gives his beloved sleep; and who only makes them sleep, and dwell in safety, Ps 4:8.
And the phrase denotes the safe and secure state of the saints upon their beds, lying down and sleeping comfortably, having nothing to fear, the Lord sustaining them; and so may and should sing upon their beds, Ps 3:5; Yea, saints may sing upon their sick beds; since the Lord is with them there, and strengthens them on a bed of languishing, and makes all their bed in their sickness, Ps 41:3; and even upon their death beds may sing aloud the triumphant song, "O death, where is thy sting?"
&c. 1Co 15:55. Saints in a future state are on beds; the grave is a bed, where their flesh rests in hope; and the bosom and arms of Jesus are the bed in which their souls rest; and where they are, not in a state of insensibility and inactivity, but are walking and talking, and singing aloud the praises of electing, redeeming, and calling grace, Isa 57:1.