{They were not able to withstand} (ouk ischuon
antist(886e)ai). Imperfect active of ischu(935c), to have strength, and
ingressive second aorist active (intransitive) infinitive of
anthist(886d)i. They continued unable (without strength enough) to
take a stand against. Stephen knocked them down, Saul included,
as fast as they got up. Stephen was like a battery charged and in
action. {The wisdom and spirit} (	(8869) sophi(8369) kai pneumati).
Dative case. They stood up against Stephen's wisdom and the Holy
Spirit "by whom he spoke" (h(9369) elalei). Instrumental case and
the relative agrees with "Spirit." He kept on speaking so
(elalei, imperfect active). It was a desperate situation.