Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.

and of teaching about immersions [Note: The use of the plural word here suggests teaching on the distinctions between Jewish washings and John's and Christian immersion, whether in water or the Holy Spirit. See Acts 19:1-7], and about placing hands on people [Note: This act was practiced in the appointment of church leaders, in healing sick people and to impart supernatural gifts], and about people being raised from the dead and about never ending judgment.

So an earlier regulation is abrogated because it was poor and ineffective

“And their sins and their lawless acts
I will remember no more [no longer holding their sins against them].”

Now faith is the assurance (title deed, confirmation) of things hoped for (divinely guaranteed), and the evidence of things not seen [the conviction of their reality—faith comprehends as fact what cannot be experienced by the physical senses].

Faith made the sacrifice which Abel offered to God a better sacrifice than Cain's, and won him renown as a righteous man, God himself establishing his renown by accepting his gifts; and it is by the example of his faith that Abel, though dead, still speaks.

All these died in faith, not having taken the promises, but who saw and greeted them from afar, and who confessed that they were foreigners and sojourners on the earth.