Then said I, Lo, I come. – Psalm 40:7

Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation: he that believeth shall not make haste. – Isaiah 28:16

Have you not seen people engaged in urgent work who did not understand their business Apprentices, and other unskillful people, are muddling time away. They are making bad worse, and running great risk. Perhaps a great calamity will occur if the work is not done well and quickly. A first-rate worker is sent for. See, the man has come who understands the business. He cries, “Let me come! Stand out of my way! You are on the wrong track: let me do it myself!” You have not blamed him for egotism, for the thing needed to be done, and he could do it, and the others could not. Everybody recognized the master workman, and gave place to him. The announcement of his coming was the end of the muddle, and the signal of hope. Even so Jesus comes to you sinners, and His presence is your salvation. He says, “Lo, I come.” What does He mean? He means, the setting of all else on one side. There is the priest-he has not helped you much; he may go, for Jesus says, “Lo, I come.” There are your own efforts and doings; there are your feelings and thinkings; there are your ceremonies and austerities; there are your prayers and tears; there are your hearings and readings-all these must be laid aside as grounds of confidence, and Jesus alone must be your trust. He can do for you what none of these can. You are trying to work yourself up to repentance and faith, and you cannot succeed. Let Him come, and He will bring every good thing with Him. It is glorious to see our Lord throwing down all our bowing walls and tottering fences, and to hear Him cry, “Behold, I lay in Zion for a foundation.” Everything else vanishes before His perfect salvation. ~ C.H. Spurgeon

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