Here are excerpts from Catholic resources to assist us in the understanding of this Commandment:

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• Think of His fatherly care even for most insignificant of HIs creatures.

• How infinite is the distance between God and man!

• We adore God exteriorly by vocal prayer, sacrifice, prostrations, ect.

• We ought to avoid all exaggeration in devotion, and never omit the duties of our state in life.

• True piety is cheerful. The soul that rejoices in the possession of God, that is rich in virtue, produces a pleasant impression on others.  

• We should aim at simplicity in our devotions. 

• "He who performs the duties of his calling with diligent care for the love of God, is truly pious and a man after God's heart."

• Idolatry is the worship of a creature which is regarded as a deity.

• All who are engrossed in material interests are guilty of idolatry, especially the avaricious, the proud, the intemperate, the unchaste. 

• Persons are guilty of idolatry, if they cherish an inordinate affection for another.

• Superstition, fortune-telling, spirtualism, and magic are forms of worship and are to be avoided.

• Avoid media, publications, and activities that speaks against the faith.

• Every day in the year some one or more saints are commemorated; their names are mentioned in the Mass and invoked in litanies and public prayers. They magnify God in their life's story.