My guess is mainly for Aspergillum and Deploy Capella.
Asper makes your auto attacks holy property and gives them a bit of aoe by splash damage, and DC gives a huge boost to holy attacks. A little tip: if you’re going Chap, get Fade max. Setting Capella up takes a retarded amount of time and Fade drops your aggro for that duration.
Paraclitus Time is a full uptime knockback and knockdown resistance buff, something that all classes love.
Visible Talent is a cumulative burst skill that can deal some serious damage (or so I’ve heard). Raising skill level only reduces its cooldown (by mere 4 sec at max lv) so 1 point is enough with this skill.
The remaining points go to Last Rites, a slightly better version of Sacrament.
I haven’t played much Krivis after Re:Build, but since Monk’s focus is AA’s with Double Punch, Chap makes a perfect partner for it. I admit that Kriv feels somewhat underused at the moment.
One other reason may be why a Monk-Chap-Zealot build is one in top 100 is because Zealot can do everything that Kriv can do and more.
Crit buff? Beady Eyes gives 45% crit rate + guaranteed 1.5 sec of crits after using it attribute. Buff lasts 5 sec while cd is 10 secs so you have 50% uptime on that.
Zalciai? Fanatic Illusion is a mobile version of that. The only problem is it apparently drains your SP crazy fast. But Zeal is a SP hungry class anyway so eh. (side note - picking Chap improves your base SPR by a lot so it helps)
Divine Stigma? Fanaticism increases your damage by 80% at the cost of no healing for 15 secs, powerful but be careful with that.
In addition, Immolation is a 1 point wonder that reduces monster defense by 50% but yours too, also deals you a small DoT for 5 secs (the Melt Armor attribute). It’s also fun way to pull aggro on you XD
As for Blind Faith and Empathic Trust, everyone rags on them, but IMO at least one point in each will improve your dps greatly for a few hits.
But as everyone says, it all boils down to what you like playing.