'Heat' in the Bible

Or [you have the untamed and reckless nature of] a wild donkey accustomed to the wilderness,That sniffs the wind in her passion [for the scent of a mate].In her mating season who can restrain her?No males seeking her need to weary themselves;In her month they will find her [looking for them].

“For he will be [nourished] like a tree planted by the waters,That spreads out its roots by the river;And will not fear the heat when it comes;But its leaves will be green and moist.And it will not be anxious and concerned in a year of droughtNor stop bearing fruit.

Therefore thus says the Lord concerning Jehoiakim king of Judah, “He shall have no heir to sit on the throne of David, and his dead body shall be thrown out to the heat of the day and to the frost of the night.