Listen, my beloved brethren: Has God not chosen the poor of this world to be rich in faith and heirs of the kingdom which He promised to those who love Him? – James 2:5

Cold and impassive are some of our divines; they utter truth as though it were no concern of theirs whether men received it or no. To such men heaven and hell, death and eternity, are mere themes for oratory, but not subjects for emotion. The man who will do good must throw himself into his words and put his whole being into intense communion with the truth which he utters. God’s true minister cannot preach a sermon upon the ruin of man without feeling a deep amazement in his own spirit, because of the burden of the Lord. He cannot, on the other hand, unfold the joys of pardon and the love of Jesus without a leaping heart and rejoicing tongue. The man who is devoid of love will be devoid of power, for sympathies are golden chains by which Christian orators draw men’s ears and hearts to themselves and the truths they teach. “I preached,” said one, “when I spake of condemnation as though I wore the chains about my own arm, and heard them clanking in my ears.” “And I,” another might have said, “I preached of pardon bought with blood, as though I had myself just come up from the sacred fountain, having left my foulness all behind, and being girt about with the white linen which is the righteousness of the saints.” If our hearers perceive that we do not really long for their good, that our preaching is but a matter of mere routine to be got through as so much irksome “duty,” can we hope to win their hearts? But when they feel that there is a loving heart within the preacher, then they give the more earnest heed to the things whereof we speak. You Sunday-school teachers, you must have warm hearts, or you will be of little use to your children. You street-preachers, city missionaries, Bible women, and tract distributors, you who in any way seek to serve our Lord—a heart, a heart, a heart, a tender heart, a flaming heart, a heart saturated with intense sympathy, this, when sanctified by the Holy Spirit, will give you success in your endeavors. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/0479.cfm