These refer to any of God's people in general. AT: "My faithful people ... If any one of them shrinks ... with that person" or "My faithful people ... If they shrink ... with them" (See: [[rc://en/ta/man/translate/figs-genericnoun]])
A person who loses courage and faith are spoken of as if he were stepping back in fear from something. And "destruction" is spoken of as if it were a destination. AT: "who stop trusting God, which will cause him to destroy us" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Living eternally with God is spoken of as if it were keeping one's soul. Here "soul" refers to the whole person. AT: ", which will result in us living with God forever" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-synecdoche]])