Truth can be attested by the supernatural, but so can falsehood.
If Israel is to please the Lord fully, they will live lives that are as distinctive among the nations as their Lord is different from pagan deities.
Even guilty people deserve to be treated as those made in the image of God.
God demonstrates generosity, then asks it from His people.
Giving to God should come from the firstfruits of a person's labor rather than from what is left after the bills are paid.
A concern for doctrinal purity should always be based on love of the Lord, not a desire to express spiritual pride.