Hashem’s name Yud-Kay
15 neviim achronim
15 amos were Noah’s flood water
15 klaim for the 2 ksafayim (Shmos 27: 14&15)
15 years Amatzia (son of Yoash king of Yehuda) lived after Yehoash died (melachim bais 14:17)
14 prakikm in Hoshea
14 prakim in Zecharia