The center of Jewish life was the temple at Jerusalem. See the ''lamed'' in 'Temple' ''heykal'' היכל means ? The temple has something to do with teaching. The particular lessons in it'lamentation הי at s construction and the sacrifices will be covered later.  Jerusalem [[ירושׁלם‎]] is the Son 'teaching [[ירו]] of peace [[שלם]]. Jeru [[ירו]] means 'God's כ teaching ל[[י]] revelation [[ר]] made clear [[ו]].  Salem means 'peace'.