Some translations set poetry farther to the right than the rest of the text to show that it is poetry. The ULB does this with the poetry in verse 9, which is quoted from the Old Testament.
Paul uses three agricultural metaphors. He uses them to teach about giving to needy believers. The metaphors help Paul explain that God will reward those who give generously. Paul does not say how or when God will reward them. (See: [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/tw/dict/bible/other/reward]])