And I will give you rest…Take My yoke upon you and learn of Me; for I am meek and lowly in heart: and ye shall find rest unto your souls. – Matthew 11:28, 29

“I will give you rest” comes before “Ye shall find rest.” It is the rest of a man who is already at rest, the repose of a man who has received a given rest, and now discovers the found rest. It is the rest of a learner-“Learn of Me, and ye shall find rest.” It is not so much the rest of one who was aforetime laboring and heavy laden, as of one who is to-day learning at the Saviour’s feet. It is the rest of a seeker evidently, for finding usually implies a search. Having been pardoned and saved, the saved man in the course of his experience discovers more and more reason for peace; he is learning, and seeking, and he finds. The rest is evidently lighted upon, however, as a thing unknown, which becomes the subject of discovery. The man had a rest from his burden; now he finds a rest, in Christ, which exceeds what he asked or even thought.

I have looked at this rest after rest as being a treasure concealed in a precious box. The Lord Jesus gives to His people a priceless casket, called the gift of rest; it is set with brilliants and inlaid with gems, and the substance thereof is of wrought gold; whosoever possesses it feels and knows that his warfare is accomplished and his sin is pardoned. After awhile the happy owner begins to examine his treasure. It is all his own, but he has not yet seen it all, for one day he detects a secret drawer, he touches a hidden spring, and lo! Before him lies a priceless Koh-I-Noor surpassing all the rest. It had been given him it is certain, but he had not seen it at first, and therefore he finds it. Jesus Christ gives us in the gift of Himself all the rest we can ever enjoy, even heaven’s rest lies in Him; but after we have received Him, we have to learn His value, and find out by the teaching of His Spirit the fulness of the rest which He bestows. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0969.cfm