1 Let brotherly love continue.
2 Do not forget to entertain strangers, for by so doing some have unwittingly entertained angels.
3 Remember the prisoners as if chained with them — those who are mistreated — since you yourselves are in the body also.
4 Marriage is honorable among all, and the bed undefiled; but fornicators and adulterers God will judge.
5 Let your conduct be without covetousness; be content with such things as you have. For He Himself has said, “I will never leave you nor forsake you.”
6 So we may boldly say: “The LORD is my helper; I will not fear. What can man do to me?”
entertained angels (v.2) — Abraham (Genesis 18:1-3); Lot (Genesis 19:1-2)
It is important to notice that Israel must endure to the end of their Great Tribulation while keeping the faith of Christ and the commandments, which is referred to as the “everlasing gospel,” the source of which is angels (Revelation 14:6, 12).
And it is of the utmost importance for remnant Israel to pay attention to angels, hence this instruction to entertain strangers because those strangers might actually be angels; and angels have the everlasting gospel to preach to remnant Israel.
These instructions are very much opposite the apostle Paul’s clear teaching that we in our dispensation are not under the commandments (Romans 6:14; Colossians 2:16; Galatians 5:1) and that we are not to lsiten to angels (Galatians 1:8). — M.A.D. about Hebrews, by Terence D. McLean, pages 186-187
in the body (v.3) — in a condition in which they might also have to suffer
Marriage is (v.4) = “let marriage be”
honorable (v.4) = held as of great price, esteemed
content (v.5) — satisfied with what meets your needs and not wanting extra
such things as you have (v.5) = one’s circumstances
I will never leave you (v.5) — quote from Deuteronomy 31:6
leave (v.5) = loosen, let sink, neglect to uphold
forsake (v.5) = abandon in troubles, let one down
boldly (v.6) — in the habit of being courageous
The LORD is my helper (v.6) — quote from Psalm 118:6