Psalm 1
The idea of guarding and growing is one that we also find in Psalm 1:1–6. The blessed man, because he meditates on God’s Word rather than going along with lawless men (guarding), grows like a tree planted next to streams of waters bearing much fruit. As a result he will stand in the judgment.
14 C'est pourquoi, bien-aimés, en attendant ces choses, appliquez-vous à être trouvés par lui sans tache et irréprochables dans la paix.