This term is defined in the dictionary as a belief or trust that does not question or ask for proof. For some people faith is just a word. These people often say that they have faith, they do not even understand the importance of the word. These verses talk about faith. Laws, except the laws of God are rules created by norms in this sinful world.
Norms are things that corrupt humans.
A long time ago, the Jews made sacrifices such as lambs and doves to please God. But Jesus Christ was the ultimate sacrifice, so we don't have to make any other sacrifice, but just have faith in the one who died for you. Sacrifices were a norm for Jesus. You won't go to heaven for killing a humble lamb or dove, but by trusting Jesus and following his sayings. We should by faith have love in Jesus.