Lo, I come. – Psalm 40:7

Come unto Me… – Matthew 11:28

Christ is salvation, and everything needful to salvation is in Him. If He comes, all good comes with Him, or rather in Him. An enquirer once said to a minister, “The next step for me is to get a deeper conviction of sin.” The minister said, “No such thing, my friend: the next step is to trust in Jesus, for He says, Come unto Me.” To come to Jesus, or rather to receive Jesus who has come to us, is the one essential step into eternal salvation. Though our Lord does say, “Come unto Me,” He has preceded it with this other word, “Lo, I come.” Poor cripple, if you cannot come to Jesus, ask Him to come to you; and He will. Here you lie, and you have been for years in this case; you have no man to put you into the pool, and it would do you no good if he did; but Jesus can make you whole, and He is here. You cannot stir hand or foot because of spiritual paralysis; but your case is not hopeless. Listen to my Lord in the text, “Then said I, Lo, I come.” He has no paralysis. He can come, leaping over the mountains of division. I know my Lord came to me, or I should never have come to Him: why should He not come to you? I came to Him because He came to me.

“He drew me, and I followed on,
Charmed to confess the voice divine.”

Why should He not draw us also? Is He not doing so? Yield to the pressure of His love.

“Then said I, Lo, I come.” You see our Lord is His own spokesman. He says to me, “Go and tell those people about My coming”; and I gladly do so; but you will forget my words, and refuse to accept the Coming One. Your consciences will be unawakened, your hearts unmoved: I fear it will be so. But if this text be fulfilled concerning our Lord this day-“Then said I, Lo, I come”-you will hear HIM. If He speaks He is Himself the Almighty Word, and His voice will reach your hearts, and accomplish His purpose. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2203.cfm