And my soul shall be joyful in the LORD: it shall rejoice in His salvation. -Psalm 35:9

It is an unfortunate thing that Christianity gets associated with melancholy…It is a good thing for the melancholy to become a Christian; it is an unfortunate thing for the Christian to become melancholy. If there is any man in the world that has a right to have a bright, clear face and a flashing eye, it is the man whose sins are forgiven him, and who is saved with God’s salvation. In order for any man, however, to rejoice in God’s salvation, he must, first of all, know it. There must be an intelligent apprehension of what it is. Next, he must grasp it by an act of faith as his own. Then, having grasped it, he must study it to know the price at which it was bought, and all the qualities-the divine qualities- that follow from it. Then he must hold it fast, and seek to get out the sweetness from it. What is there in God’s salvation that should make us rejoice? I do not know what to select, for it is all joy and all rejoicing. It is enough to make our heart to ring with joy to think that there should be a salvation at all for such poor souls as we are. We may well hang out all the streamers of our spirits, and strew the streets of our soul with flowers, for King Jesus has come to dwell there. Ring every bell; give Him a glorious welcome. Let all the souls be glad when Jesus enters and brings salvation with Him, for the salvation of Christ is so suitable that we may well rejoice in it. Dear brother, if you are saved, I know the salvation of Christ suited you. It did me-exactly-it was made on purpose for me. I am as sure of it as if there were no other sinner to be saved. It was the gospel that brought power to the weak, nay, it brought life to the dead; it brought everything to those that had nothing; it is just the sort of gospel for a penniless, bankrupt sinner like myself. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3503.cfm