'Heat' in the Bible

And if this is how God clothes the wild grass, which is here today and tomorrow is tossed into the fire to heat the oven, won't he clothe you even more, you people of little faith?

but when the sun is risen, it is scorched by the heat, and through having no root it withers up.

Saying, These last have wrought but one hour, and thou hast made them equal unto us, which have borne the burden and heat of the day.