As for the words you cite:

“That is Jesus, son of Mary—the word of truth.”

There are two well-known readings: the nominative and the accusative. Under either reading, it has been said that “the word of truth” refers to Jesus, just as he is called the Word of Allah.

It has also been said that the meaning is: “What We have mentioned is the word of truth.” In that case, it is the predicate of an omitted subject. This has parallels, such as His words:

“They will say, ‘Three, their fourth being their dog’”—and the rest of the verse;

and:

“Say, ‘The truth is from your Lord.’”

That is: “This truth is from your Lord.” If Jesus is intended, calling him “the word of truth” is like calling him the Word of Allah. On this interpretation, it functions as a predicate and as an appositive. Either interpretation has parallels, so the question of calling it figurative is the same as with those parallels. The more apparent meaning is that this account We have given of Jesus, son of Mary, is the word of truth—although his being the son of a servant of Allah is included in this.

Some say that “the Truth” means Allah, and that the intended meaning is “the word of Allah.” Although this is a sound meaning, the Quran’s usual practice, when attributing speech to Allah, is to say “the word of Allah.” It does not say “the word of truth” unless a true statement is intended, as in His words:

“His word is the truth”;

“Allah speaks the truth”;

and:

“The truth—and the truth I speak.”

Furthermore, constructions like this, in which a noun is joined to its adjective in a genitive construction—as in His words, “grain of the harvested crop,” and the expressions “the prayer of the first” and “the abode of the Hereafter”—are, according to many of