In these two verses (Hebrews 13:4-5) we have the same connection of thought as in Hebrews 12:16; Colossians 3:5; Ephesians 5:3. “Impurity and covetousness may be said to divide between them nearly the whole domain of human selfishness and vice” (Lightfoot on Colossians 3:5).
Conversation. — Literally, way of thought and life, character, disposition.
For he. — Rather, for He Himself hath said. As in many other places in this Epistle, the word of Scripture is regarded as directly spoken by God; but there is an emphasis here (“He Himself”) which well suits the remarkable impressiveness of the words quoted, “I will in no wise let thee go; no, nor will I forsake thee.” This promise of divine support and protection does not occur exactly in the same form in the Old Testament, but is clearly taken from Deuteronomy 31:6, “He will not fail thee nor forsake thee.” (Comp. also Genesis 28:15; Joshua 1:5; 1 Chronicles 28:20.) The appositeness of these words and those which follow (Hebrews 13:6) will be seen if we remember the trials which the Hebrew Christians had already endured (Hebrews 10:32-34). It is very probable that this thought supplies the link of connection between Hebrews 13:5-6, and Hebrews 13:7.