…but thou hast played the harlot with many lovers; yet return again to Me, saith the LORD. – Jeremiah 3:1

It is sadly probable that there are some who once loved God very earnestly, but now they have declined and become grievously indifferent; God’s love to us never changes, but ours too often sinks to a low ebb. Perhaps some of you have become so cold in your affections that it is difficult to be sure that you ever did love God at all. It may be that your life has become lax, so as to deserve the censure of the Church. You are a backslider, and you are in a dangerous condition; yet, if there be indeed spiritual life in you, you will wish to return. You have gone astray like a lost sheep, but your prayer is, “seek Thy servant, for I do not forget Thy commandments.” Now, note well, that the cause which originated your love is the same which must restore it. You went to Christ as a sinner at first, and your first act was to believe the love of God to you when there was nothing in you that evidenced it. Go the same way again. Do not stop, my dear brother, to pump up love out of the dry well within yourself! Do not think it possible that love will come at your bidding. If a man would give all the substance of his house for love, it would utterly be contemned. Think of the Lord’s unchanging grace, and you will feel the spring-time of love returning to your soul. Still doth the Lord reserve mercy for the sinful, still He waiteth to be gracious; He is as willing to receive you now that you have played the prodigal, as He was to have retained you at home in the bosom of His love. Many considerations ought to aid you, backslider, to believe more in the love of God than ever you did. For think what love it must be that can invite you still to return; you, who after knowing so much have sinned against light and knowledge; you, who after having experienced so much, have given the lie to your profession…But thus saith the Lord, “Thou hast played the harlot with many lovers, yet return unto Me.” What matchless love is this. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1008.cfm