All those who believe are chosen.
The characteristic of the chosen is faith, conviction, because everything that tries to block him is consumed by the fire of faith that burns within him.

The person that is filled with the Spirit of Faith does not care about the price he will pay, the sacrifice he will have to make.

I will make a mortal more rare than fine gold, a man more than the golden wedge of Ophir. Isaiah 13.12

Who are the true golden wedges of Ophir? The chosen ones.

Therefore, the Israel Challenge is not for all the assistants, just for the chosen, because the Altar is the place for the purification of gold.

Fools and blind! For which is greater, the gold or the temple that sanctifies the gold? Matthew 23.17

Though the gold may become mixed with impurities (sins), once it is placed on the Altar, it will be purified, separating one from the other.

Gold knows the path of purification – the foundry. The chosen know the path to conquest and the purification of their faith – the Altar of Sinai.

The chosen are called by name.
Moses was called by name, climbed the natural Altar of God, Mount Sinai, and there the Word spoke to him and the Fire from the bush purified him. The same way, you will be called by name in this campaign, and the Fire from the Altar of Mount Sinai will purify you.

Only the chosen, those who believe, those who are gold, will go to the Altar to make a true sacrifice.