Law and Grace
God’s Law keeping doesn’t Save us but only His Grace does (His Work “Alone”).
However, “obedience toward His Law” (e.g. 1 Corinthians 14:37 toward Gentile believers) would cause one to be “great or least” respectively in “His Kingdom” as it is clearly stated in verse below:
“Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.” – Lord Jesus Christ (Matthew 5:19, KJV)
*”Lawlessness” brings temporal age-during (serious) Judgment upon ourselves as “our own sins” we “reap” (Galatians 6:7, Matthew 25:46, Matthew 7:20 – 23) in the “afterlife”.