'Take Heed' in the Bible

Did he not make one, although he had the residue of the Spirit? Why one? He sought a godly seed. Therefore take heed to your spirit, and let none deal treacherously against the wife of his youth.

For I hate divorce," says the LORD, the God of Israel, "and him who covers his garment with violence." says the LORD of hosts. "Therefore take heed to your spirit, that you do not deal treacherously.