Words for edifying

Like golden apples set in silver is a word spoken at the right time.
Proverbs 25:11 ISV

A word fitly spoken,.... Or, "a word spoken on its wheels" (d): that proceeds aright, keeps due order, is well circumstanced as to matter, method, time, place, and persons; a discourse well put together, properly pronounced, roundly, easily, and fluently delivered to proper persons, and adapted to their circumstances; and "seasonably" spoken, as the Targum and many versions render it:

Let everything you say be good and helpful, so that your words will be an encouragement to those who hear them.
Ephesians 4:29 

Therefore encourage one another and build each other up, just as in fact you are doing.
1 Thessalonians 5:11

So then let us pursue what makes for peace and for mutual upbuilding.
Romans 14:19 ESV

May God reward you well for what you've done - and with a generous bonus besides from God, to whom you've come seeking protection under his wings."  
Ruth 2:12 MSG