Exodus 12
1And the LORD spake unto Moses and Aaron in the land of Egypt, saying,
2This month
shall be unto you the beginning of months: it
shall be the first month of the year to you.
3Speak ye unto all the congregation of Israel, saying,
In the tenth day of this month they shall take to them every man a lamb, according to the house of
their fathers, a lamb for an house:
4And if the household be too little for the lamb, let him and his neighbour next unto his house take
it according to the number of the souls; every man according to his eating shall make your count for the lamb.
5Your lamb shall be without blemish, a male of the first year: ye shall take
it out from the sheep, or from the goats:
6And
ye shall keep it up until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.
The letter Dalet
...contains the meaning "door", the
fourth letter
I.e. The Lamb was kept for
four days for inspection, then sacrificed for the sins of the people.
This may resonate with a future fulfillment...
John 10
9 I am the
door: by me if any man enter in, he shall be saved, and shall go in and out, and find pasture.
10 The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.
11 I am the good shepherd: the good shepherd giveth his life for the sheep.