De or het christ?

The correct Dutch article is:

de christ

Rule Words ending in -ist: almost always de. See the rule
Meaning (Dutch) (religie, verouderd) aanhanger van het geloof in Jezus Christus

How to use christ

the christde christ
this christdeze christ
that christdie christ
our christonze christ
your christjouw christ
every christelke christ
which christ?welke christ?
a big christ / the big christeen grote christ, de grote christ

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).