Paul is using a question to scold those who are judging others. You can translate this as a statement. Alternate translation: "You are not God, and you are not allowed to judge one of his servants!" (See: [[rc://en/ta/man/translate/figs-rquestion]])
Paul speaks of God as if he were a master who owned servants. Alternate translation: "Only the master can decide if he will accept the servant or not" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Paul speaks of the servant who is acceptable to God as if he were being "made to stand" instead of falling. You can translate this in an active form. Alternate translation: "But the Lord will accept him because he is able to make the servant acceptable" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-activepassive]])