How does one determine if .....

Simple answer is context, grammar, genre and occasion for writing. What command specifically?

 

As a layman, I would say two things would help determine that question, the Holy Spirit in us and common sense. That is my guide.

 

Your question is a great question that MANY Christians desire to know.

I don't know if you will like this answer, but it is simply, Love one another.

Jhn 15:17 These things I command you, that ye love one another.

Rom 13:8 Owe no man any thing, but to love one another: for he that loveth another hath fulfilled the law.

Rom 13:10 Love worketh no ill to his neighbour: therefore love is the fulfilling of the law.

See also 1 Thes 4:9, 1 Pet 1:22, 1 Jhn 3:11, 1 Jhn 3:23, 1 Jhn 4:7,11,12, 2 Jhn 1:5.

That we love one another and love all men is commanded over and over again in the NT. Rom 13:10 is a good rule to live by, do nothing that works ill to your neighbor. So, of course you wouldn't lie, or steal, or covet your neighbors wife, etc...

 

Well, 1 outta 2 ain't bad figger'n you're in Kentucky......that's 50% and an A- in that state...... :thumbs: :wavey: :laugh: :flower:

 

I have trouble believing that anything that has been preserved in the Bible isn't, to at least some extent, "for us today."

I'd be very careful about ignoring or discounting a command or practice that is recorded in God's word.

 

Check me on this, but isn't it correct that all of the Ten Commandments were reinforced in the New Testament--except the observance of the Sabbath?

 

If it is not about morality than most likely it is a cultural law.

 

The Lords day sabbath-

9 there doth remain, then, a sabbatic rest to the people of God,

10 because this [is] the covenant that I will make with the house of Israel, after those days, saith the Lord, giving My laws into their mind, and upon their hearts I will write them, and I will be to them for a God, and they shall be to Me for a people;