Summary:
In the context of Psalms 15 and our goal of being a part of God's great coming Kingdom... Integrity and other Servant-Leadership qualities are crucial for our lives to appropriately reflect the attributes outlined for us in that Psalm.

The attached slide presentation is mainly Excerpted from Mr. Greg Thomas' “Beyond Merely Leading” Presentation he gave at the 2013 Leadership Workshop plus some added thoughts on Integrity from Mr. Gary Petty from his sermon on Integrity which is available at   https://www.ucg.org/sermons/integrity-2. 

Also highly recommend Mr. Gordon Hanaway's message on Integrity as he delves into some very interesting components of the Roman soldier and how this ties to how we are to gird up our Spiritual armor ... https://www.ucg.org/sermons/integrity-3