Ben Sira 32:15

15 Study his Law, and you will master it, unless you are insincere about it, in which case you will fail.

Ben Sira 32:15 In-Context

13 And don't forget to thank your Creator for letting you enjoy so many good things.
14 If you fear the Lord, you will accept his correction. He will bless those who get up early in the morning to pray.
15 Study his Law, and you will master it, unless you are insincere about it, in which case you will fail.
16 If you fear the Lord, you will know what is right, and you will be famous for your fairness.
17 Sinners have no use for correction, and will interpret the Law to suit themselves.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.