Psalm 30:2, 9-12 AMP
2 O Lord my God, I cried to You and You have healed me.
9 What profit is there in my blood, when I go down to the pit (the grave)? Will the dust praise You? Will it declare Your truth and faithfulness to men?
10 Hear, O Lord, have mercy and be gracious to me! O Lord, be my helper!
11 You have turned my mourning into dancing for me; You have put off my sackcloth and girded me with gladness,
12 To the end that my tongue and my heart and everything glorious within me may sing praise to You and not be silent. O Lord my God, I will give thanks to You forever.
From NetBible Ps 30:11
- girded me with gladness = clothed me with joy
- clothed-‘azar = girded(metaphorical of strength), encompassed, equipped
- joy-simchah = joy, mirth, gladness, joy (of God)
*The root denotes being glad or joyful with the whole disposition, the whole heart  
Isaiah 61:1-3, 10-11 AMP
1 The Spirit of the Lord God is upon me, because the Lord has anointed and qualified me to preach the Gospel of good tidings to the meek, the poor, and afflicted; He has sent me to bind up and heal the brokenhearted, to proclaim liberty to the [physical and spiritual] captives and the opening of the prison and of the eyes to those who are bound,
2 To proclaim the acceptable year of the Lord [the year of His favor] and the day of vengeance of our God, to comfort all who mourn,
3 To grant [consolation and joy] to those who mourn in Zion—to give them an ornament (a garland or diadem) of beauty instead of ashes, the oil of joy instead of mourning, the garment [expressive] of praise instead of a heavy, burdened, and failing spirit—that they may be called oaks of righteousness [lofty, strong, and magnificent, distinguished for uprightness, justice, and right standing with God], the planting of the Lord, that He may be glorified.
10 I will greatly rejoice in the Lord, my soul will exult in my God; for He has clothed me with the garments of salvation, He has covered me with the robe of righteousness, as a bridegroom decks himself with a garland, and as a bride adorns herself with her jewels.
11 For as [surely as] the earth brings forth its shoots, and as a garden causes what is sown in it to spring forth, so [surely] the Lord God will cause rightness and justice and praise to spring forth before all the nations [through the self-fulfilling power of His word].
The Lord has girded His ‘oaks of righteousness’ with gladness
They are equipped with His joy, His strength –Neh 8:10
Clothed with joy as with a garment which surrounds,
encompassing on every side. –Ps 30:11
==> To set captives free, that the Lord may be glorified
==> these oaks are a praise on display before the nations
==> an everlasting sign Ps 92:15;Isa 55:12-13
Of the Lord’s faithfulness
He is our Rock!
Psalm 92:12-15 AMP
12 The [uncompromisingly] righteous shall flourish like the palm tree [be long-lived, stately, upright, useful, and fruitful]; they shall grow like a cedar in Lebanon [majestic, stable, durable, and incorruptible].
13 Planted in the house of the Lord, they shall flourish in the courts of our God.
14 [Growing in grace] they shall still bring forth fruit in old age; they shall be full of sap [of spiritual vitality] and [rich in the] verdure [of trust, love, and contentment].
15 [They are living memorials] to show that the Lord is upright and faithful to His promises; He is my Rock, and there is no unrighteousness in Him.
From NetBible Ps 92:12-15
- flourish[ 06524] = to break forth as a bud, i.e. bloom; generally, to spread; specifically, to fly (as extending the wings); figuratively, to blossom, break forth (out), bud, flourish, make fly, grow,
spread, spring (up).
- full of sap = filled with vitality
*from  = anointed, fat
- rich in verdue= fresh, green, flourishing
Psalm 92:10 AMP
10 But my horn (emblem of excessive strength and stately grace) You have exalted like that of a wild ox; I am anointed with fresh oil.
Be anointed with fresh oil, the oil of joy