I am the rose of Sharon, and the lily of the valleys. – Song of Songs 2:1

He is not only full of joy, and pleasure, and delight to our hearts, but He is full of all sorts of joy, and all sorts of pleasure, and all sorts of delights to us.

“Nature, to make His beauties known,
Must mingle colors not her own.”

The rose is not enough, you must have the lily also, and the two together fall far short of the glories of Christ, the true “Plant of renown.”

“I am the rose.” That is the emblem of majesty. The rose is the very queen of flowers; in the judgment of all who know what to admire it is enthroned above all the rest of the beauties of the garden. But the lily-what is that? That is the emblem of love...Are you not delighted when you put these two things together, majesty and love? A King upon a throne of love, a Prince, whose very eyes beam with love to those who put their trust in Him, a real Head, united by living bonds of love to all His members; such is our dear Lord and Savior. A rose and yet a lily; I do not know in which of the two I take the greater delight, I prefer to have the two together. When I think that my Savior is King of kings and Lord of lords, I shout, “Hallelujah!” But when I remember that He loved me, and gave Himself for me, and that still He loves me, and that He will keep on loving me for ever and ever, there is such a charm in this thought that nothing can excel it. Look at the lily, and sing,-

“Jesus, lover of my soul,
Let me to Thy bosom fly,
While the nearer waters roll,
While the tempest still is high!
Hide me, O my Savior, hide,
Till the storm of life be past;
Safe into the haven guide;
Oh receive my soul at last.”

Then look at the rose, and sing,-

“All hail the power of Jesus’ name!
Let angels prostrate fall;
Bring forth the royal diadem,
And crown Him Lord of all;”

then put the rose and the lily together, and let them remind you of Christ’s majesty and love. The combination of these sweet flowers also suggests our Lord’s suffering and purity.

“White is His soul, from blemish free,
Red with the blood He shed for me.”

The rose, with its thorn, reminds us of His suffering, His bleeding love to us, His death on our behalf, His bearing of the thorns which our sin created. Christ is a royal rose beset with thorns; but the lily shows that-

“For sins not His own
He died to atone.”

And of what avail would His perfections be if He had not died, the Just for the unjust, to bring us to God? But the two together, the rose and the lily, suffering and purity, fill us with delight. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2472.cfm