A.T. Robertson Commentary Hebrews 2:13

"And again, I will put my trust in him. And again, Behold, I and the children whom God hath given me." — Hebrews 2:13 (ASV)

I will put my trust in him (Εγω εσομα πεποιθως επ' αυτω). A rare periphrastic (intransitive) future perfect of πειθω, a quotation from Isa 8:17. The author represents the Messiah as putting his trust in God as other men do (cf. Hebrews 12:2). Certainly Jesus did this constantly. The third quotation (κα παλιν, And again) is from Isa 8:18 (the next verse), but the Messiah shows himself closely linked with the children (παιδια) of God, the sons (υιο) of verse 10.