Lucas 21:15

15 pues yo mismo les daré tal elocuencia y sabiduría para responder, que ningún adversario podrá resistirles ni contradecirles.

Lucas 21:15 Meaning and Commentary

Luke 21:15

For I will give you a mouth
A faculty of speaking, a freedom of expression, a door of utterance, a good degree of elocution, to speak properly, pertinently and freely to any point: and wisdom;
to answer with great propriety, and in the most prudent manner, to any difficult and ensnaring question; and to furnish with such knowledge of the Gospel, and with such gifts and abilities to preach and defend it, that they should be able to give a clear and distinct account of it, and prove every point in it, by the most strong and convincing arguments, and vindicate it against all objections: which all your adversaries shall not be able to gainsay or resist.
This was remarkably fulfilled in Peter, and John, and in Stephen, ( Acts 4:13 Acts 4:14 ) ( 6:10 ) . The first word, "gainsay", is left out in the Syriac and Persic versions.

Lucas 21:15 In-Context

13 Así tendrán ustedes la oportunidad de dar testimonio ante ellos.

14 Pero tengan en cuenta que no hay por qué preparar una defensa de antemano,

15 pues yo mismo les daré tal elocuencia y sabiduría para responder, que ningún adversario podrá resistirles ni contradecirles.

16 Ustedes serán traicionados aun por sus padres, hermanos, parientes y amigos, y a algunos de ustedes se les dará muerte.

17 Todo el mundo los odiará por causa de mi nombre.