The angel race communicates by a different language that is holy to the common man but they have learned the common language to be able to pass messages from god and speak of religious feats to everyone your vast knowledge also allows you to learn one other language 

improves your AC and your defense against one attack

deals 2d8+(INT) of damage to one enemy and stuns them 

one use per day or replenishes after long rest  

After old battles and many wars the angel race developed certain technique to utilize their quality's and shortcoming, after intense training the old shortcoming of the angel race are now utilized to give a upper hand in intensive combat

as holy being the angels are protected by god from the forces of dark and undead magic

The Angel race still grow at the same rate as humans until they are adults at 18 which at that point they stop aging allowing them to live almost eternally this means that they are able to have knowledge that even the oldest history book do not say

As a angel you can detect a creatures true intention, you also have a wide knowledge on various religion, due to this connection to god you can pray and understand most religions and there motives

Your large white wing that are the primary symbol of angels but due to their size and color this makes it very hard to hide or sneak up on people

Your expertise in Religion and vast knowledge has improved your wisdom of the world around you but due to your obsession to religion it leaves you blinded in what is changing in the world around you

you learned that due to your large wings a great flight speed you learned that in combat you could make a small shockwave to push yourself in a certain direction to surprise a enemy and use this to your advantage in combat

A old memory from your times as a celestial being in the heavenly realm this memory allows you to remember your some of your old powers that you have lost and helps increase you this allows you to increase 2 stats by +1 and another by +2