"For the LORD your God is a consuming fire, a jealous God."
It may seem odd to think of God as being jealous. We often think of jealousy as a negative quality. But understanding God's exclusive claim on our heart, it is far from a negative thing. God has established a relationship with us that is marked by the same kind of commitment as a husband for his wife. Just as a husband would have righteous jealousy over his wife flirting with another man, God has a righteous jealousy toward us.
God, keep my heart undivided, fully given to you!