That was not preaching it is a Bible study. The Gospel message is simple and easily understood but the average person on the strret corner will not understand it or will not accept because one needs the Spirit for Spiritual things. If you have issues with words used or how things are explain ask.
It has been shared already here. How is it you did not hear? There is and has only been one Gospel.
And the LORD thy God will circumcise thine heart, and the heart of thy seed, to love the LORD thy God with all thine heart, and with all thy soul, that thou mayest live.If thou shalt hearken unto the voice of the LORD thy God, to keep his commandments and his statutes which are written in this book of the law (the Word), and if thou turn unto the LORD thy God with all thine heart, and with all thy soul. For this commandment which I command thee this day, it is not hidden from thee, neither is it far off. It is not in heaven, that thou shouldest say, Who shall go up for us to heaven, and bring it unto us, that we may hear it, and do it? Neither is it beyond the sea, that thou shouldest say, Who shall go over the sea for us, and bring it unto us, that we may hear it, and do it?
But the word ( the commandments and his statutes which are written in this book of the law; the Word) is very nigh unto thee, in thy mouth, and in thy heart, that thou mayest do it. This is the circumcision made without hands; the Gospel of GOD through Moses. For God has said, the LORD thy God will circumcise thine heart With is the circumcision of Christ.
(Deu 30:6,10-14)
As said in Romans 10:6-8, For the righteousness which is of faith speaketh on this wise, Say not in thine heart, Who shall ascend into heaven? (that is, to bring Christ (the Word; the Book of the Law) down from above

Or, Who shall descend into the deep? (that is, to bring up Christ (the Word; the Book of the Law) again from the dead.) But what saith it? The word (Christ; the Book of the Law) is nigh thee, even in thy mouth, and in thy heart: that is, the word of faith, which we preach. And that is the Gospel!