Deuteronomy 10:20

20 `Jehovah thy God thou dost fear, Him thou dost serve, and to Him thou dost cleave, and by His name thou dost swear.

Deuteronomy 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 ) .

Deuteronomy 10:20 In-Context

18 He is doing the judgment of fatherless and widow, and loving the sojourner, to give to him bread and raiment.
19 `And ye have loved the sojourner, for sojourners ye were in the land of Egypt.
20 `Jehovah thy God thou dost fear, Him thou dost serve, and to Him thou dost cleave, and by His name thou dost swear.
21 He [is] thy praise, and He [is] thy God, who hath done with thee these great and fearful [things] which thine eyes have seen:
22 with seventy persons did thy fathers go down to Egypt, and now hath Jehovah thy God made thee as stars of the heavens for multitude.
Young's Literal Translation is in the public domain.