Romans 15:2
"Let every one of us please his neighbour for his good to edification."
Cross References (ranked by relevance)
1 Corinthians 10:24
22
Let no man seek his own, but every man another’s wealth.
Romans 14:19
22
Let us therefore follow after the things which make for peace, and things wherewith one may edify another.
1 Corinthians 13:5
Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;