The question of which squad mode abilities a chaplain gets under "Liturgies of Battle" has been answered.

"The Squad Mode abilities available to a Chaplain under the Liturgies of Battle Oath are as follows: Furious Charge, Squad Advance, Soak Fire.

Keep an eye out for a future errata that will include this addition.

Thanks for the question,

Tim"
[sic]

So there we go. Thanks again Tim.