Proverbs 2:11 Discretion shall preserve thee, understanding shall keep thee.
The condition for this promise is still “hearing the Word and seeking knowledge of God.” If you are in the Word, then you gain discretion and understanding; discretion and understanding will preserve you and keep you. Discretion and understanding are synonyms for Wisdom: wisdom is Jesus and faith in Him. Wisdom is knowing the way to live, and then saying the things that give a blessing and dong the things that are good for others.
This godly lifestyle comes from faith in Jesus, which comes from hearing the Gospel. Then we have wisdom (discretion and understanding), which is Jesus’ life. We learn from the Law what is right and good, then we are convicted of sin for failing to do it, then we repent and receive forgiveness, then we are motivated and empowered by the Gospel and the Spirit to actually do it right.. The Gospel is the power to do the Law and become better people. This is wisdom and sanctification.
Jesus is the wisdom of God and our sanctification. First Jesus forgives and saves. Then He makes us better people. The promise is that the discretion and understanding of the Law and the Gospel will preserve us and keep us in the one true faith now and forever. This is the good life.