The Holy Qur’an and the Blessed Injeel are in glorious, clear agreement that Hazrat Isa ( ع ) is the Saying of Truth.
ذَلِكَ عيسَى ابْنُ مَرْيَمَ قَوْلَ الْحَقِّ الَّذِي فِيهِ يَمْتَرُونَ
This is Isa the son of Mariam, the saying of truth, about whom they are doubting.
Holy Qur’an | Mariam 19:34
λέγει αὐτῷ ὁ Ἰησοῦς, Ἐγώ εἰμι ἡ ὁδὸς καὶ ἡ ἀλήθεια καὶ ἡ ζωή·
Jesus replied, “I am the way, and the truth, and the life.”
Blessed Injeel | John 14:6
Some thoughts
In both cases, Hazrat Isa ( ع ) says the truth … and also IS the truth.