'Heat' in the Bible

And they say to the messengers who are coming, 'Thus do ye say to the men of Jabesh-Gilead: To-morrow ye have safety -- by the heat of the sun;' and the messengers come and declare to the men of Jabesh, and they rejoice;

And it was so on the morrow, that Saul put the people in three companies; and they came into the midst of the host in the morning watch, and slew the Ammonites until the heat of the day: and it came to pass, that they which remained were scattered, so that two of them were not left together.

And Jonathan riseth from the table in the heat of anger, and hath not eaten food on the second day of the new moon, for he hath been grieved for David, for his father put him to shame.