Numbers 9:2-5

Thomson(i) 2 Give orders, and let the children of Israel keep the passover in its appointed season. 3 On the fourteenth day of this first month, towards evening, thou shalt celebrate it in its season. According to its rites, and according to its institution, thou shalt celebrate it. 4 Accordingly Moses spoke to the children of Israel to keep the passover 5 on the fourteenth day of the first month, in the wilderness of Sina. And when the children of Israel were doing as the Lord commanded Moses,