The church was not in the OT. It was a mystery. It was hidden. OT saints did not not have a clue about the church.
Romans 16:25 Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began,
Ephesians 5:32 This is a great mystery: but I speak concerning Christ and the church.
Very good, Amy G
There are those that take the promises, the conditional blessings, and the law given to Israel and apply it to the believer.
I am not saying that the principles taught through those examples are not good for the believer to know and understand.
Their are those who demand compliance to the law, use the promises given to Israel as also given to the modern believer, and expect the conditional blessings given to Israel to be fulfilled in the believer, too.
A person using such teaching can be a tool of the enemy to cause discouragement, stumbling, and hardness to the leading of the Holy Spirit in others' lives.
The Holy Spirit is our guide into ALL truth. Not the Law.
The Scriptures serve as the weapon against the enemy. Not the Law.