Here Paul compares those who do not know anything about the law to very small children. Alternate translation: "and you teach those who do not know the law" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The knowledge of the truth that is in the law comes from God. Alternate translation: "because you are sure you understand the truth that God has given in the law" (See: [[rc://en/ta/man/translate/figs-explicit]])