the flesh profits nothing.”
If we grow impatient and fall into the flesh then we become weaker. To react in the flesh diminishes spiritual authority, and this must be avoided at all costs. Allowing the flesh to have its way for only a moment guarantees defeat against a spiritual adversary.
“We worship God in the Spirit, and rejoice in Christ Jesus, and have no confidence in the flesh” (Philippians 3:3). To lose all confidence in the flesh is to take the higher ground of the Spirit. To meet flesh with flesh means the victory will go to the strongest, and there is always someone stronger than you according to the flesh.