When a righteous man feels an inclination to sin, God will place stumblingblocks in his way to force moral choices, as well as a watchman to give understanding.
Balaam illustrates the paradox of someone who knows God's will, but willfully and deliberately disobeys, presumptuously thinking he could manipulate or bribe God.
Formality and decorum (in terms of dress and behavior) are part of godly standards and sanctity. We must always look for the spirit and intent of what God commands.
Over-emphasis on law produces rigidity and loophole hunters, while over-emphasis on spirit produces emotional imbalance, permissiveness, and lack of structure.
Mechanically keeping the law is only the beginning of righteousness. By emphasizing principle, Christ came to magnify, not to destroy God's law.