knowing it was out of self-interest that the chief priests had handed Jesus over to him.
Read Mark 15:10 Using Other Translations
For he knew that the chief priests had delivered him for envy.
For he perceived that it was out of envy that the chief priests had delivered him up.
(For he realized by now that the leading priests had arrested Jesus out of envy.)
Scripture quoted by permission. Quotations designated (NIV) are from THE HOLY BIBLE: NEW INTERNATIONAL VERSION®. NIV®. Copyright © 1973, 1978, 1984, 2011 by Biblica. All rights reserved worldwide.
(New International Version Bible Online)