Isaiah 35:10

For by these tokens the kingdom of God and the kingdom of the devil are distinguished: and in truth if lifting up our mental gaze on high we would consider that state in which the heavenly powers live on high, who are truly in the kingdom of God, what should we imagine it to be except perpetual and lasting joy? For what is so specially peculiar and appropriate to true blessedness as constant calm and eternal joy? And that you may be quite sure that this, which we say, is really so, not on my own authority but on that of the Lord, hear how very clearly he describes the character and condition of that world. "Behold," he says, "I create new heavens and a new earth; and the former things shall not be remembered nor come into mind. But you shall be glad and rejoice forever in that which I create." And again "joy and gladness shall be found therein: thanksgiving and the voice of praise, and there shall be month after month, and sabbath after sabbath." And again: "They shall obtain joy and gladness; and sorrow and sighing shall flee away." And if you want to know more definitely about that life and the city of the saints, hear what the voice of the Lord proclaims to the heavenly Jerusalem: "I will make," he says, "your officers peace and your overseers righteousness. Violence shall no more be heard in your land, desolation nor destruction within your borders. And salvation shall take possession of your walls, and praise of your gates."

When death is swallowed up in victory, therefore, there will be no corruption of body or soul, for when all iniquity has been removed from us, no infirmity will remain. Indeed, it is about such matters that Isaiah said, "They will obtain joy and gladness; …

I ask you to consider the condition of the other life, so far as it is possible to consider it; for no words will suffice for an adequate description. But from the things which are told us, as if by means of certain riddles, let us try and get some indistinct vision of it. "Pain and sorrow and sighing," we read, "have fled away." What then could be more blessed than this life? It is not possible there to fear poverty and disease. It is not possible to see any one injuring or being injured, provoking or being provoked, or angry, or envious, or burning with any outrageous lust, or anxious concerning the supply of the necessities of life, or bemoaning himself over the loss of some dignity and power. For all the tempest of passion in us is quelled and brought to nothing, and all will be in a condition of peace and gladness and joy, all things serene and tranquil, all will be daylight and brightness, and light, not this present light but one excelling this in splendor as much as daylight is brighter than a lamp. For things are not concealed in that world by night or by a gathering of clouds. Bodies there are not set on fire and burned. For there is neither night nor evening there, nor cold nor heat, nor any other variation of seasons. But the condition is of a different kind, such as only they will know who have been deemed worthy of it. There is no old age there, nor any of the evils of old age, but all things relating to decay are utterly removed, and incorruptible glory reigns in every part. But greater than all these things is the perpetual enjoyment of relationship with Christ in the company of angels and archangels and the higher powers.

And in fact, if we look with the elevated gaze of our mind at the condition wherein the heavenly and supernal virtues that are truly in the kingdom of God make their home, what else should it be thought to be than perpetual and continual joy? For what belongs so much to true blessedness and so befits it as continual tranquility and everlasting joy?… "They shall receive joy and gladness; sorrow and groaning shall flee away."

You are about to journey a long road, and you need many supplies. You shall arrive at the place eternal that has two regions, wherein are many mansions; one of which places God has prepared for them that love him and keep his commandments, full of all manner of good things. And they that attain to it shall live for ever in incorruption, enjoying immortality without death, where pain and sorrow and sighing are fled away. But the other place is full of darkness and tribulation and pain, prepared for the devil and his angels. In it also they shall be cast who by evil deeds have deserved it, who have bartered the incorruptible and eternal for the present world and have made themselves fuel for eternal fire.

And he sets out the frequentation of the ways: and the redeemed, those redeemed from the preceding dangers: for behold your children come, whom you sent away scattered (Bar 4:37). Fourth, he promises them joy of heart: everlasting joy, above: he shall wipe away tears …

Those that by faith are made citizens of the gospel Zion may go on their way rejoicing ( Acts viii. 39 ); they shall sing in the ways of the Lord, and be still praising him. They rejoice in Christ Jesus, and the sorrows and signs of their convictions are made to flee away by the power of divine consolations.

And the ransomed of the Lord shall return,....

Language: literally, applying to the return from Babylon; figuratively and more fully to the completed redemption of both literal and spiritual Israel. joy upon . . . heads-- (Ps 126:2). Joy manifested in their countenances. Some fancy an allusion to the custom of pouring oil "upon the head," or wearing chaplets in times of public festivity (Ec 9:8).

And the ransomed of the Lord - The word rendered here ‘ransomed,’ is different from the word rendered ‘redeemed’ in Isa 35:9. This word is פדוּיי pedûyēy from פדה pâdâh; though it is not easy, perhaps not possible, to designate the difference in the sense. Doubtless there was a shade of difference among the Hebrews, but what it was is not now known. See this word explained in the note at Isa 1:27. The language here is all derived from the deliverance from Babylon, and the images employed by the prophet relate to that event. Still, there can be no doubt that he meant to describe the deliverance under the Messiah. Shall return, and come to Zion - This language also is that which expresses the return from Babylon. In a more general sense, and in the sense intended particularly by the prophet, it means, doubtless, that all who are the redeemed of God shall be gathered under his protection, and shall be saved. With songs - With rejoicing - as the ransomed captives would return from Babylon, and as all who are redeemed enter the church on earth, and will enter into heaven above. And everlasting joy upon their heads - This may be an expression denoting the fact that joy is manifest in the face and aspect (Gesenius). Thus we say that joy lights up the countenance, and it is possible that the Hebrews expressed this idea by applying it to the head. Thus the Hebrews say Psa 126:2: Then was our mouth filled with laughter. And our tongue with singing. Or it may refer to the practice of anointing the head with oil and perfume in times of festivity and joy - in contrast with the custom of throwing ashes on the head in times of grief and calamity (Rosenmuller). Or it may refer to a custom of wearing a wreath or chaplet of flowers in times of festivity, as is often done now, and as was commonly done among the ancients in triumphal processions (Vitringa). […]