Acquiring knowledge of the Scriptures by having a routine of Bible study was essential to Paul so that he could remain steadfast.
وَصِيَّتُكَ تَجْعَلُنِي أَحْكَمَ مِنْ أَعْدَائِي ،‏ لِأَنَّهَا إِلَى ٱلدَّهْرِ لِي .‏