It's a landmark for a young child to count to 100; it sort of covers all the "ordinary" numbers. One hundred is obviously significant for other groupings: 100 cents is a dollar; 100 yards is a touchdown; 100 years is a century, and the landmark for a very long life. It makes sense, then, that in the Bible, 100 represents fullness or a state of completion, or in some instances simply "much." For instance, people marvel that Abraham had Isaac when he was 100 years old; the number represents the point at which the Lord, when growing up as Jesus, united the human elements of himself with the divine elements and in a sense became "complete.

4298. 'And Jacob called the name of the place Peniel' means a state of temptations. This is clear from the train of thought, for in former times names were given to places where some special incident took place, and those names served to mean that incident which took place there, and the state associated with it, 340, 2643, 3422. To this place a name was given which meant a state of temptations, because it is a state of temptations that is described here by Jacob's wrestling and contending. In the original language 'Peniel' means 'the face of God', and the fact that 'seeing the face of God' means suffering the severest temptations will be explained in what follows immediately below.