Hebrews 6:1-3 lists the foundational doctrines of Christianity.

There are 6 of them: Repentance , Faith, Baptisms, Laying on of Hands, Resurrection of the dead, and the Judgement.

These are in the order of our walk in Him; and they are listed in couplets.

You may not have heard these taught very often. However, we need to understand them before we move on in our faith.

PS  I believe that Paul wrote the book of Hebrews..