I will put my trust in him (Egō esomai pepoithōs ep' autōi). A rare periphrastic (intransitive) future perfect of peithō, a quotation from Isa 8:17. The author represents the Messiah as putting his trust in God as other men do (cf. Heb 12:2). Certainly Jesus did this constantly. The third quotation (kai palin, And again) is from Isa 8:18 (the next verse), but the Messiah shows himself closely linked with the children (paidia) of God, the sons (huioi) of Heb 2:10.