'Precepts' in the Bible

‘They worship Me in vain [their worship is meaningless and worthless, a pretense],Teaching the precepts of men as doctrines [giving their traditions equal weight with the Scriptures].’

For all who depend on the Law [seeking justification and salvation by obedience to the Law and the observance of rituals] are under a curse; for it is written, “Cursed (condemned to destruction) is everyone who does not abide by all things written in the book of the law, so as to practice them.”

Do not be deceived, God is not mocked [He will not allow Himself to be ridiculed, nor treated with contempt nor allow His precepts to be scornfully set aside]; for whatever a man sows, this and this only is what he will reap.

(these things all perish with use)—in accordance with the commandments and teachings of men.

For you know what commandments and precepts we gave you by the authority of the Lord Jesus.

to keep all His precepts without stain or reproach until the appearing of our Lord Jesus Christ,

And this is how we know [daily, by experience] that we have come to know Him [to understand Him and be more deeply acquainted with Him]: if we habitually keep [focused on His precepts and obey] His commandments (teachings).

But whoever habitually keeps His word and obeys His precepts [and treasures His message in its entirety], in him the love of God has truly been perfected [it is completed and has reached maturity]. By this we know [for certain] that we are in Him:

By this we know [without any doubt] that we love the children of God: [expressing that love] when we love God and obey His commandments.

For the [true] love of God is this: that we habitually keep His commandments and remain focused on His precepts. And His commandments and His precepts are not difficult [to obey].

And this is love: that we walk in accordance with His commandments and are guided continually by His precepts. This is the commandment, just as you have heard from the beginning, that you should [always] walk in love.