Regardless, scripture that has applied to others in the bible does apply to us in the present. God doesn't change. I am not arguing the point but it is easy to say that God intended something in particular for one person and not others. If we use Abraham and Isaac as an example, God will probably not test our faith by asking us to sacrifice our son on an altar (God wouldn't likely have a sacrifice anyway since Jesus was the sacrifice for our atonement of sins). BUT God may test our faith to see if He comes first. So, my point is that we may be tested in our faith but the manner in which we are tested may be different.
God still feels the same (based on scripture) about sin. If something wasn't okay in the Old and New Testament, it applies today.
Fig, have you read Job or Hosea? (And believe me I am not picking on you at all) Do you believe the bible is the word of God and can be relied upon as innerant, infallible and God-breathed?
