That part of the line of battle which is most fiercely assailed by the enemy is sure to be that which he knows to be most important to carry. Men hate those they fear. The antagonism of the enemies of the gospel is mainly against the cross. From the very first it was so.
They cried “Let him come down from the cross and we will believe in him.” They will write us pretty lives of Christ and tell us what an excellent man he was, and do our Lord such homage as their Judas’ lips can afford him; they will also take his sermon on the mount and say what a wonderful insight he had into the human heart, and what a splendid code of morals he taught, and so on.
“We will be Christians” say they, “but the dogma of atonement we utterly reject.” Our answer is, we do not care one farthing what they have to say about our Master if they deny his substitutionary sacrifice, whether they give him wine or vinegar is a small question so long as they reject the claims of the Crucified. The praises of unbelievers are sickening; who wants to hear polluted lips lauding him?
Such sugared words are very like those which came out of the mouth of the devil when he said “Thou Son of the Highest,” and Jesus rebuked him and said “Hold thy peace, and come out of him.” Even thus would we say to unbelievers who extol Christ’s life: “Hold your peace! We know your enmity, disguise it as you may. Jesus is the Savior of men or he is nothing; if you will not have Christ crucified you cannot have him at all.”
My brethren in Jesus let us glory in the blood of Jesus, let it be conspicuous as though it were sprinkled upon the lintel and the two side posts of our doors, and let the world know that redemption by blood is written upon the innermost tablets of our hearts. (source)