JST, Matthew 5:21. Compare Matthew 5:19

Whoso keeps the commandments and teaches others to do the same will be saved.

21 Whosoever, therefore, shall break one of these least commandments, and shall teach men so to do, he shall in no wise be saved in the kingdom of heaven; but whosoever shall do and teach these commandments of the law until it be fulfilled, the same shall be called great, and shall be saved in the kingdom of heaven.