Don't make decision under enthusiasm

I Samuel 14:24-35
The men of Israel were in distress that day, because Saul had bound the people under an oath.
It seems encouraged the heart to avenge the enemies, but let the troops faint.
Jonathan said his father had made trouble for the country. if the men had eaten today some of the plunder they took from their enemies.
Israelite were exhausted, they took sheep, cattle and calves, butchered them on the ground and ate them, together with the blood. They have broken faith.
Saul built an altar to the Load ; it was the first time he had done this.
Saul made a mental disorder, and let troops made a oath, they feared the oath, but after they were exhausted they did wrong- eat with blood.
Why?
Bible tell us do not made a oath, if it is true then say "yes" if it is false then say "no". Saul did oath under enthusiasm.
Action based on the own enthusiasm may made trouble.
distress, faint and exhaust are limitation of physical condition for human being. Fast can't  be an order to everyone it need the faith to do it.
Saul built a altar to the Load, one for thanks the blessing of the Load, one for the sin of the people of the Israelite.
How?
Don't make decision under enthusiasm for it could be not cleaver. Don't oath so easy for the Load has sovereign.