ANSWER: We should bear in mind that the four Gospels contain all the truths of Christianity in seed form. The atonement is thus taught in Matt. 20:28, "The Son of man came not to be ministered unto, but to minister and to give his life a ransom for many." If Christ had said more than this before his death and resurrection demonstrating that he is both God and man, and that for this reason he only was capable of making an atonement, he would have bewildered and confounded his disciples by teaching a doctrine which they could not then have received. But after his blood had been shed and he had arisen, ascended, and poured out the Pentecostal gift in proof that he had reached the throne of his Father and was glorified, the doctrine of the atonement could now be clearly unfolded and its relation to salvation be revealed by the Paraclete as Jesus had promised with respect to the many things he had to say which they could not then bear. (2) While it is true that the term atonement is not found in the Revised New Testament, the thing itself is found everywhere in other terms, such as redemption, propitiation, blood of sprinkling and sacrifice of himself. The absence of the words Trinity and sacrament is no valid argument against the fundamental doctrines, which are abundantly taught in other terms.
— Steele's Answers p. 114, 115.