1 Thessalonians 5:16

Rejoice evermore. Not in a carnal, but in a spiritual way, with joy in the Holy Ghost; and which arises from a view of pardon by the blood of Christ, of justification by his righteousness, and atonement by his sacrifice; not in themselves, as the wicked man rejoices in his wickedness, and the hypocrite and formalist in his profession of religion, and the reputation he gains by it; and the Pharisee and legalist in his morality, civility, negative holiness, and obedience to the rituals of the law; for such rejoice in their boastings, and all such rejoicing is evil; but in the Lord Jesus Christ, in the greatness, fitness, fulness, and glory of his person, in his blood, righteousness, and sacrifice, in what he is in himself, and is made unto his people, and in what he has done, and is still doing for them, and particularly in the salvation he has wrought out; and not in the things of this life, and the attainments of it, either of body, or of mind, or of estate, as in strength, wisdom, or riches; but in things spiritual, that our names are written in heaven, and we are redeemed by the blood of Christ, and called by his grace, and shall be glorified together with him; and not only in prosperity, but in adversity, since all things work together for good, and afflictions serve for the exercise of grace; and especially, since to suffer reproach and persecution for the sake of Christ, and his Gospel, is a great honour, and the Spirit of God, and of glory, rests on such, and great will be their reward in heaven: and there is always reason, and ever a firm ground and foundation for rejoicing with believers, let their circumstances or their frames be what they will; since God, their covenant God, is unchangeable, and his love to them is from everlasting to everlasting invariably the same; the covenant of grace, which is ordered in all things, and sure, is firm and immovable; and Jesus, the Mediator of it, is the same today, yesterday, and for ever.