Devarim 10:20

20 Thou shalt fear Hashem Eloheicha; Him shalt thou serve, and to Him shalt thou have thy deveykus, and swear by Shmo.

Devarim 10:20 Meaning and Commentary

Deuteronomy 10:20

Thou shalt fear the Lord thy God
Which includes the whole worship of him, external and internal:

him shalt thou serve;
heartily and sincerely, according to his revealed will, and him only:

and to him shall thou cleave;
and not turn aside to follow other gods, and worship them:

and swear by his name;
and his only, whenever it is necessary to take an oath, which should not be done rashly or on trivial accounts; and never by any creature, but by the living God; see ( Deuteronomy 6:13 ) .

Devarim 10:20 In-Context

18 He doth execute the mishpat for the yatom and almanah, and loveth the ger, in giving him lechem and simlah (clothing).

19 Love ye therefore the ger; for ye were gerim in Eretz Mitzrayim.

20 Thou shalt fear Hashem Eloheicha; Him shalt thou serve, and to Him shalt thou have thy deveykus, and swear by Shmo.

21 He is thy tehillah (praise), and He is Eloheicha, that hath done for thee these great and terrible things, which thine eyes have seen.

22 Avoteicha went down into Mitzrayim with shivim nefesh; and now Hashem Eloheicha hath made thee as the kokhavim of Shomayim for multitude.