Don't have anything to do with foolish and stupid arguments, because you know they produce quarells. And the Lord's servant must not be quarrelsome but must be kind to everyone, able to teach, not resentful. 2Timothy 2:23-24
Be very careful then how you live - not as unwise but as wise, making the most of every opportunity, because the days are evil! Therefore do not be foolish but understand what the Lord's will is! Ephesians 5:15-17
Finally, be strong in the Lord and in his mighty power. Put on the full armor of God, so that you can take your stand against the devil's schemes. For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against spiritual forces of evil in the heavenly realms. Ephesians 6:10-12.