'First' in the Bible

The Lord spoke [by special revelation] to Moses in the Wilderness of Sinai in the Tent of Meeting (tabernacle) on the first day of the second month in the second year after the Israelites came out of the land of Egypt, saying,

and assembled all the congregation on the first day of the second month, and they registered by ancestry in their families (clans), by their fathers’ households, according to the number of names from twenty years old and upward, head by head,

The total of the numbered men [in the three tribes on the east side] in the camp of Judah was 186,400, by their armies. They shall move out first [on the march].

Now the one who presented his offering on the first day was Nahshon the son of Amminadab, of the tribe of Judah;

The Lord spoke to Moses in the Wilderness of Sinai in the first month of the second year after they had come out of the land of Egypt, saying,

They observed the Passover on the fourteenth day of the first month at twilight in the Wilderness of Sinai; in accordance with all that the Lord had commanded Moses, so the Israelites did.

The standard of the camp of the sons of Judah, according to their armies, moved out first, Nahshon the son of Amminadab was [commander] over its army,

You shall lift up a cake made of the first of your [ground grain which has been made into] dough as an offering [to the Lord]; as an offering from the threshing floor, so shall you lift it up.

From the first of your dough (ground grain) you shall give to the Lord an offering throughout your generations.

Every firstborn of the womb of all flesh, whether it is man or animal, which they bring to the Lord, shall be yours; nevertheless, the firstborn of man you shall most certainly redeem, and the firstborn of unclean animals you shall redeem.

Then the Israelites, the whole congregation, came into the Wilderness of Zin in the first month [in the fortieth year after leaving Egypt]. And the people lived in Kadesh. Miriam died there and was buried there.

Then Balak again sent leaders, more numerous and [men who were] more distinguished than the first ones.

‘The Lord’s Passover shall be on the fourteenth day of the first month [of each year].

On the first day there shall be a holy [summoned] assembly; you shall do no laborious work that day.

‘On the first day of the seventh month, you shall have a holy [summoned] assembly; you shall do no laborious work. It will be for you a day of blowing the trumpets (the shophar, ram’s horn).

They set out from Rameses on the fifteenth day of the first month; on the day after the Passover the Israelites moved out triumphantly in the sight of all the Egyptians,

Aaron the priest went up on Mount Hor at the command of the Lord, and died there in the fortieth year after the Israelites came out of the land of Egypt, on the first day of the fifth month.