The brother of Jared is described as
"....a large and mighty man and highly favored of the Lord..."
we know his name is Mahonri Moriancumer (reference [see Messenger and Advocate 1:112])
Jared and his brother were led by the Lord, in Ether 2:5 it says "...And it came to pass that the Lord did go before them, and did talk with them as he stood in a cloud, and gave directions whither they should travel."
This is the first example I see of "Receiving strength beyond their own" or in this case receiving guidance beyond their own knowledge.
Ether 2:6 "did build barges, in which they did cross many waters, being directed continually by the hand of the Lord."
Now we know the story of them building the barges and having no light in them, no air to breath. The Lord told the brother of Jared to "make a hole in the top, and also in the bottom; and when thou shalt suffer for air thou shalt unstop the hole and receive air. And if it be so that the water come in upon thee, behold, ye shall stop the hole, that ye may not perish in the flood." (Ether 2:20)
2nd example of "Receiving strength beyond their own"
Again the brother of Jared cried unto the Lord and asked for light, so that they wouldn't have to cross in darkness.
The brother of Jared collected sixteen small stones, that were white and clear. He took the to the top of mount Shelem and asked the Lord to touch the stones with His finger so that they might shine in the darkness.
The Lord touched them with His finger and was pleased with the brother of Jared's faith.
The Lord knew uncounted ways to light the ships, but he took time to
define the problem, and then offered help only after Moriancumer had
designed the solution.
The Lord honors the brother of Jared’s solution by touching the stones,
and as he does so, the veil is removed from Moriancumer’s eyes and he
sees the Lord’s finger. Astonished, he asks the Lord to show himself
unto him. The Lord not only grants that request but also shows him a
vision of the full panorama of the world’s history. So marvelous were
the things shown to the brother of Jared that the record of it is hidden
from us until we are prepared to receive it.
(For whole story see Ether 1-3)
The whole story is a huge example to me, so long as I have continual faith that when I ask the Lord will give me what I need, like Nephi said "the Lord giveth no commandments unto the children of men, save he shall prepare a way for them that they may accomplish the thing which he commandeth them" The Lord will help me, he will prepare a way for me. He will prepare the way for me to become a Sister Missionary for His church, He will guide me to where I need to go, the spirit will be with me to tell me what to say.