'Intense' in the Bible

There was intense fighting against the Philistines during Saul's entire reign, and whenever Saul discovered a strong or valiant warrior, he would enlist him for service.

Set me like a seal over your heart, like a seal on your arm. For love is as strong as death, passion as intense as Sheol. The flames of love are flames of fire, a blaze that comes from the LORD.

Our twelve tribes, worshiping day and night with intense devotion, hope to attain it. It is because of this hope, O King, that I am accused by the Jews.