Midrash su Geremia 12:14

R. Levi said: "Whoever has a synagogue in his town, and does not go there to pray, is to be called a wicked neighbor, as it is said (Jer. 12, 14.) Thus hath said the Lord against all my wicked neighbors; moreover by his actions he causes exile to himself and his children, as it is said (Ib.) I will pluck them out of their land, and the house of Judah will I pluck out from the midst of them." They told R. Jochanan. that there are aged people in Babylon, and he remarked wonderingly, "It is written (Deu. 11, 21.) In order that your days may be multiplied, and the days of your children in the land which the Lord swore unto your fathers, but not outside of Palestine." But when he was informed [of the fact] that they come early to the synagogue, and leave it late, then he said: "Aye, it is this which helps them, as R. Jochanan b. Levi said unto his children, 'Come early and remain late in the synagogue, in order that you may live long.'" R. Acha the son of R. Chanina said: "From what Biblical passage [do we learn this]? Happy is the man that hearkeneth unto me, watching day by day at my gates, waiting at the posts of my doors (Pr. 8, 34), and after this is written. For he who finds me, finds life." R. Chisda said: "A man shall always enter two doors to the synagogue." What does he mean by "two doors"? He means that a man should wait as long as it takes to walk the length of two doors, and then begin to pray.

… the prophets of Jerusalem were the first to sin, as it says “…for from the prophets of Jerusalem has falseness emanated to the whole land.” (Jeremiah 23:15) So too they were punished first and the rest did not escape, as it says “And a curse shall be taken from them…” (Jeremiah 29:22)