Romans 14:19 (King James Version)

 19Let us therefore follow after the things which make for peace, and things wherewith one may edify another.

From BibleGateway.com: http://www.biblegateway.com/passage/?search=ephesians 4:3&version=ASV

Romans 14:19 (The Emphasized Bible by J. B. Rotherham)

19 Hence, then, the things pertaining to peace, let us pursue, and the things which belong to the upbuilding one of another:

From the CrossWire Bible Society (The Bible Tool): http://www.crosswire.org/study/passagestudy.jsp?key=romans+14%3A19